-3-10r=-9r+7

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Solution for -3-10r=-9r+7 equation: 



-3-10r=-9r+7

We move all terms to the left:

-3-10r-(-9r+7)=0

We get rid of parentheses

-10r+9r-7-3=0

We add all the numbers together, and all the variables

-1r-10=0

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

-r=10

r=10/-1

r=-10

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