7-r=8-r-r-r

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



7-r=8-r-r-r

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

-1r-(-3r+8)+7=0

We get rid of parentheses

-1r+3r-8+7=0

We add all the numbers together, and all the variables

2r-1=0

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

2r=1

r=1/2

r=1/2

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