anonymous
  • anonymous
Need helpp MEdalls!!!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Okay, if you say so.
anonymous
  • anonymous
hang on imma draw my problem
anonymous
  • anonymous
Lol

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anonymous
  • anonymous
\[-4\frac{ 3 }{ 5 }-2\frac{ 1 }{ 2 }\]
anonymous
  • anonymous
I dont understad how to simplify these problems
anonymous
  • anonymous
Id rather know how to do this problem then relie on a caculator
anonymous
  • anonymous
dude uve been typing for the past 20 minutes are you gonna help me?
anonymous
  • anonymous
-71/10
anonymous
  • anonymous
changed mixed numbers to improper fractions
anonymous
  • anonymous
so -(23/5)-(5/2)=-(46/10)-(25/10)=-71/10
anonymous
  • anonymous
but I have like 20 more of those to answer so I was hopeing somebody can show me the steps so I can copy the procedure on the other problems
anonymous
  • anonymous
ok multiply 5 by 4 and then add 3 for first fraction to get -23/5
anonymous
  • anonymous
the quickest way to think about it is to multiply the denominator by the whole number the add the numerator. the get common denominators before anyting else
anonymous
  • anonymous
you get the numerator that way over the same denominator
anonymous
  • anonymous
so like x(a/b) = (bx+a)/b
anonymous
  • anonymous
do same for second fraction to end up with improper fractions
anonymous
  • anonymous
so I have to find the common denominator before anythiing
anonymous
  • anonymous
i would get them to imporper fractions before common denominators
anonymous
  • anonymous
yes then find common denominator if it is not already there.
anonymous
  • anonymous
first. convert mixed number to improper fraction second. get common denominator if needed third. solve
anonymous
  • anonymous
okay so it should be 12/5 -2/2
anonymous
  • anonymous
then the denominators should be 10 right
anonymous
  • anonymous
no \[4 \frac{ 3 }{ 5 }\]
anonymous
  • anonymous
becomes 23/5
anonymous
  • anonymous
how did you get 23
anonymous
  • anonymous
because 5*4 is 20 and then add 3 to get 23
anonymous
  • anonymous
that is new numerator
anonymous
  • anonymous
and denominator stays the same
anonymous
  • anonymous
oh okay so let me try again
anonymous
  • anonymous
23/5 - 5/2
anonymous
  • anonymous
look at this http://www.mathplayground.com/fractions_mixed.html
anonymous
  • anonymous
yes thats right but dont forget the minus signs
anonymous
  • anonymous
okay the 23/5 would be negative right ?
anonymous
  • anonymous
yes
anonymous
  • anonymous
because 4(3/5) was negative
anonymous
  • anonymous
the number is the same just converted to make it easier to do computations
anonymous
  • anonymous
type in calculator and see you get the same number
anonymous
  • anonymous
-(23/5) -5/2 and the common denominator would be ten right
anonymous
  • anonymous
also 5 goes into 23 4 times plus some remainder which is the fraction
anonymous
  • anonymous
yes
anonymous
  • anonymous
okay i got that
anonymous
  • anonymous
so were do i go from there
anonymous
  • anonymous
just subtract the numerators and get the solution
anonymous
  • anonymous
18/10
anonymous
  • anonymous
the denominator stays the same so -71/10
anonymous
  • anonymous
how did you get 71
anonymous
  • anonymous
when you multiplied to get common denominator what did you get?
anonymous
  • anonymous
-46/10-25/10=-71/10
anonymous
  • anonymous
I did'nt multipy anything
anonymous
  • anonymous
do u see how I got that
anonymous
  • anonymous
you cross multiplyed?
anonymous
  • anonymous
multiply top and bottom for -23/5 by 10 and then multiply top and bottom of 25/10 by 2 to get 46/10 and 25/10
anonymous
  • anonymous
oh sorry I wrote that wrong ignore it
anonymous
  • anonymous
so -23/5 by 2/2 and -5/2 by 5/5
anonymous
  • anonymous
okay I see
anonymous
  • anonymous
so -71/10
anonymous
  • anonymous
do you get it?
anonymous
  • anonymous
yea
anonymous
  • anonymous
-71/10 right and that can be simplified
anonymous
  • anonymous
take a look at this http://www.mathsisfun.com/numbers/common-denominator.html
anonymous
  • anonymous
yes correct!
anonymous
  • anonymous
cool thanks man
anonymous
  • anonymous
no problem take care
anonymous
  • anonymous
you too
anonymous
  • anonymous
do you see what i mean

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