2(r-56)=30

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Solution for 2(r-56)=30 equation: 



2(r-56)=30

We move all terms to the left:

2(r-56)-(30)=0

We multiply parentheses

2r-112-30=0

We add all the numbers together, and all the variables

2r-142=0

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

2r=142

r=142/2

r=71

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