2(3-r)=12

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Solution for 2(3-r)=12 equation: 



2(3-r)=12

We move all terms to the left:

2(3-r)-(12)=0

We add all the numbers together, and all the variables

2(-1r+3)-12=0

We multiply parentheses

-2r+6-12=0

We add all the numbers together, and all the variables

-2r-6=0

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

-2r=6

r=6/-2

r=-3

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