2r+2(r+70)=580

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Solution for 2r+2(r+70)=580 equation: 



2r+2(r+70)=580

We move all terms to the left:

2r+2(r+70)-(580)=0

We multiply parentheses

2r+2r+140-580=0

We add all the numbers together, and all the variables

4r-440=0

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

4r=440

r=440/4

r=110

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