-2(-2r-4)=12

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Solution for -2(-2r-4)=12 equation: 



-2(-2r-4)=12

We move all terms to the left:

-2(-2r-4)-(12)=0

We multiply parentheses

4r+8-12=0

We add all the numbers together, and all the variables

4r-4=0

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

4r=4

r=4/4

r=1

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