-r-10=9r+10

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



-r-10=9r+10

We move all terms to the left:

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

We add all the numbers together, and all the variables

-1r-(9r+10)-10=0

We get rid of parentheses

-1r-9r-10-10=0

We add all the numbers together, and all the variables

-10r-20=0

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

-10r=20

r=20/-10

r=-2

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