r+2=9r-10r-10

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Solution for r+2=9r-10r-10 equation: 



r+2=9r-10r-10

We move all terms to the left:

r+2-(9r-10r-10)=0

We add all the numbers together, and all the variables

r-(-1r-10)+2=0

We get rid of parentheses

r+1r+10+2=0

We add all the numbers together, and all the variables

2r+12=0

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

2r=-12

r=-12/2

r=-6

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