68=12+7r

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Solution for 68=12+7r equation: 



68=12+7r

We move all terms to the left:

68-(12+7r)=0

We add all the numbers together, and all the variables

-(7r+12)+68=0

We get rid of parentheses

-7r-12+68=0

We add all the numbers together, and all the variables

-7r+56=0

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

-7r=-56

r=-56/-7

r=+8

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