3-8r=8-7r

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Solution for 3-8r=8-7r equation: 



3-8r=8-7r

We move all terms to the left:

3-8r-(8-7r)=0

We add all the numbers together, and all the variables

-8r-(-7r+8)+3=0

We get rid of parentheses

-8r+7r-8+3=0

We add all the numbers together, and all the variables

-1r-5=0

We move all terms containing r to the left, all other terms to the right

-r=5

r=5/-1

r=-5

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