tootie149
lost yet again
-4/5x=3/5
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tootie149
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help
tootie149
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I got -12/25 but this does not work when i plug it in
lgbasallote
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is that \[\huge -\frac 45 x = \frac 35\]
tootie149
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yes, it is how did you type in the fraction?
lgbasallote
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try clicking the equation button by the comment box...you should see the fraction command there
lgbasallote
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anyway if you multiply both sides by 5 what do you get?
tootie149
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ok i see it now thanks
lgbasallote
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welcome
tootie149
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for the -4/5 * 5 =-4 and 3/5*5=3
lgbasallote
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yes dont forget x
tootie149
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x=-4/3
tootie149
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wow I get so lost so quick
lgbasallote
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it's not -4/3
tootie149
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y, what did i do wrong
lgbasallote
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i assume you tried to solve it mentally. that's what you did wrong. do it step by step
tootie149
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ok give me a min
lgbasallote
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sure
tootie149
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do i flip the -4/5 when I isolate the x
like this
-4/5x=3/5
x= 3/5 div -5/4
lgbasallote
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\[\huge -\frac 45 x = \frac 35\]
you start by multiplying both sides by 5
tootie149
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y 5
tootie149
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is it because both of the fraction have 5?
lgbasallote
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you multiply both sides by 5 because x has a denominator of 5
tootie149
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ok so this gets rid of the fractions
tootie149
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right ?
lgbasallote
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yes. so what does the equation look like after?
tootie149
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-4x=3 ?
lgbasallote
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right. so now what would you do?
tootie149
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div both sides by -4
tootie149
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-0.75
tootie149
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x=0.75
tootie149
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-0.75 my bad
lgbasallote
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yes that is right. but you should but it in fraction for
tootie149
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-4/3
lgbasallote
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form*
lgbasallote
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how did you get -4/3? (after i said it wasnt right)
tootie149
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1 1/3 sorry
tootie149
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looked at the wrong part of my paper
tootie149
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1/3
lgbasallote
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....what did you get again after you divided by 5?
tootie149
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-4x=3
lgbasallote
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so what did you after that?
simplicity
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-4x/5=3/5
=>-4x=3*5/5
=>-4x=3
=>x=-3/4
lgbasallote
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what did you do*
tootie149
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-3/4
tootie149
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wow I have been typing it upside down
lgbasallote
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what were you doing to get -4/3?
tootie149
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forgot to div both sides by -4
and because i can not reduce -3/4 that is my answer
lgbasallote
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you need to remember that you divide both sides by the coefficient of x ALWAYS... in this case your coefficient is 4..that's why you divide both sides by 4
tootie149
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because what i do to one side I do to the other
tootie149
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in order to get x alone I div -4x by -4 and I div 3 by -4 also this gives me -3/4
godorovg
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guys this problem is simple -4/5x=3/5 take the -4/5 and divide by 3/5 so you have X= -4/5 divided by 3/5 now flip the 3/5 to 5/3 so that is to change the divide to times so now you have -4/5 times 5/3= ??
tootie149
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-4/3
tootie149
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I am so wrong just looked at it
lgbasallote
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uhhh what?
lgbasallote
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so what's your answer...-3/4 or -4/3?
tootie149
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IDK!!!!!!!!
tootie149
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sorry for yelling
lgbasallote
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lol
lgbasallote
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you have -4x = 3
you said you divide by =4 so what happens if you do that?
tootie149
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the web site wolfram alfa said it is -4/3
lgbasallote
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could you post the URL of that wolframalpha?
godorovg
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no need that is right -4/3 that is what I got when I worked the problem out as well.look at my post where I went step by step through this problem.
tootie149
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reduced form is 1and 1/3
nickhouraney
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nooo
lgbasallote
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you told be the problem was \[\huge -\frac 45 x = \frac 35\]
what you posted in wolframalpha was \[\huge -\frac{4}{5x} = \frac 35\]
see the difference/
lgbasallote
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you told me*
tootie149
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no
lgbasallote
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in the first one, the x is in the numerator. In the second one, the x is in the denominator
lgbasallote
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so which one is it?
godorovg
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what is this again??
tootie149
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the x is off to the side of the side like -4/4(x)
lgbasallote
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then like i said -4/3 is wrong
lgbasallote
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wolfram is very meticulous and choosy so you have to wrie the question properly
lgbasallote
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got it now?
lgbasallote
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@tootie149 are you still there?
TheViper
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\[\huge -\frac 45 x = \frac 35\]
\(\LARGE{-4x=\frac{3\times5}{5}}\)
\(\LARGE{-4x=3}\)
\(\LARGE{x=\frac{3}{-4}}\)