2(r-18)+8=12

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Solution for 2(r-18)+8=12 equation: 



2(r-18)+8=12

We move all terms to the left:

2(r-18)+8-(12)=0

We add all the numbers together, and all the variables

2(r-18)-4=0

We multiply parentheses

2r-36-4=0

We add all the numbers together, and all the variables

2r-40=0

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

2r=40

r=40/2

r=20

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