84=-10r-36

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Solution for 84=-10r-36 equation: 



84=-10r-36

We move all terms to the left:

84-(-10r-36)=0

We get rid of parentheses

10r+36+84=0

We add all the numbers together, and all the variables

10r+120=0

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

10r=-120

r=-120/10

r=-12

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