2(r+6)=-18

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Solution for 2(r+6)=-18 equation: 



2(r+6)=-18

We move all terms to the left:

2(r+6)-(-18)=0

We add all the numbers together, and all the variables

2(r+6)+18=0

We multiply parentheses

2r+12+18=0

We add all the numbers together, and all the variables

2r+30=0

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

2r=-30

r=-30/2

r=-15

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