-9(r+1)=-18

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Solution for -9(r+1)=-18 equation: 



-9(r+1)=-18

We move all terms to the left:

-9(r+1)-(-18)=0

We add all the numbers together, and all the variables

-9(r+1)+18=0

We multiply parentheses

-9r-9+18=0

We add all the numbers together, and all the variables

-9r+9=0

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

-9r=-9

r=-9/-9

r=1

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