7-5=8-r-r

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Solution for 7-5=8-r-r equation: 



7-5=8-r-r

We move all terms to the left:

7-5-(8-r-r)=0

We add all the numbers together, and all the variables

-(-2r+8)+7-5=0

We add all the numbers together, and all the variables

-(-2r+8)+2=0

We get rid of parentheses

2r-8+2=0

We add all the numbers together, and all the variables

2r-6=0

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

2r=6

r=6/2

r=3

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