anonymous
  • anonymous
5y-3=7+4(y-2)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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sandra
  • sandra
ok hmmm. 1. 5y - 3 + 3 = y + 4(y-2)
sandra
  • sandra
2. 5y = y + 4y - 8 + 3
sandra
  • sandra
(sorry missed the +3 on the right side first line)

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sandra
  • sandra
5y - 3 = y + 4y - 8
sandra
  • sandra
ugh 1. 5y - 3 = 7 + 4y - 8
sandra
  • sandra
5y -3 + 3 = 7 + 4y -8 +3
sandra
  • sandra
5y = 2 + 4y
sandra
  • sandra
5y - 4y = 3 + 4y - 4y
sandra
  • sandra
*2
sandra
  • sandra
y = 2
anonymous
  • anonymous
thank u !!!!!!! lol now let me see if i can do it
sandra
  • sandra
heh np, sorry, I was sloppy, this step: 5y - 4y = 3 + 4y - 4y should have had a 2 instead of the 2, not sure how I hit 3
anonymous
  • anonymous
write an equivalent decimal for 0.4
sandra
  • sandra
ok so for an equivalent to .4:
sandra
  • sandra
you can always multipel a number by 1 to get an equivalent form of the original number, that is, number x 1 = the original number - but it just looks different
sandra
  • sandra
so we want to get rid of the decimal point in .4
sandra
  • sandra
so let's multiply it by 10/10 (which is 1)
sandra
  • sandra
so .4/1 x 10/10 = 4 x10/1 x 10 = 4/10
sandra
  • sandra
so 4/10 is an equivalent fraction to .4
sandra
  • sandra
now if you want an equivalent decimal
sandra
  • sandra
you can just add a .0
sandra
  • sandra
so .4 = 4 tenths
sandra
  • sandra
it also equals 4 tenths AND 0 hundredths
sandra
  • sandra
so .40 is equivalent
sandra
  • sandra
it also equals 4 tenths, 0 hundredths, and 0 thousandths
sandra
  • sandra
so .4 = .40 = .400
sandra
  • sandra
does that make sense? do you have any other questions?
sandra
  • sandra
cmfb - if you want to walk through another one I'm game
anonymous
  • anonymous
6 1/5 in decimal form
sandra
  • sandra
ok, so in this case, you know the first part, which is 6.
sandra
  • sandra
now the question is, how much is 1/5?
sandra
  • sandra
so decimals can also be looked at as fractions, specifically, how many out of some power of 10 (depending on the number of decimals you're going after)
sandra
  • sandra
after all, we know that 3/10 is .3
sandra
  • sandra
because we can just move the decimal one to the left when we're dividing by 10
sandra
  • sandra
so 6 1/5 = 6. + whatever 1/5 is if the denominator is some power of 10
sandra
  • sandra
so 1/5 = 1/5 * 2/2 (again, multiplying by 1 always gets you the same thing) = 1*2/5*2 = 2/10
sandra
  • sandra
2/10 means you can move the decimal to the left for the top number (one spot in this case)
sandra
  • sandra
so 1/5 = 2/10 = .2
sandra
  • sandra
and so 6 1/5 = 6.2
anonymous
  • anonymous
thank you so much im sorry my mom called me to help with my nephews home work
sandra
  • sandra
it's ok =) np. gl!
anonymous
  • anonymous
ok got time for one more
anonymous
  • anonymous
are you still there

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