-3r-16=-12-7r

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Solution for -3r-16=-12-7r equation: 



-3r-16=-12-7r

We move all terms to the left:

-3r-16-(-12-7r)=0

We add all the numbers together, and all the variables

-3r-(-7r-12)-16=0

We get rid of parentheses

-3r+7r+12-16=0

We add all the numbers together, and all the variables

4r-4=0

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

4r=4

r=4/4

r=1

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