2r+2(r-5)=70

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Solution for 2r+2(r-5)=70 equation: 



2r+2(r-5)=70

We move all terms to the left:

2r+2(r-5)-(70)=0

We multiply parentheses

2r+2r-10-70=0

We add all the numbers together, and all the variables

4r-80=0

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

4r=80

r=80/4

r=20

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