8-8r=4-7r

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Solution for 8-8r=4-7r equation: 



8-8r=4-7r

We move all terms to the left:

8-8r-(4-7r)=0

We add all the numbers together, and all the variables

-8r-(-7r+4)+8=0

We get rid of parentheses

-8r+7r-4+8=0

We add all the numbers together, and all the variables

-1r+4=0

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

-r=-4

r=-4/-1

r=+4

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