-5=3r+7

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Solution for -5=3r+7 equation: 



-5=3r+7

We move all terms to the left:

-5-(3r+7)=0

We get rid of parentheses

-3r-7-5=0

We add all the numbers together, and all the variables

-3r-12=0

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

-3r=12

r=12/-3

r=-4

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