8(r+3)=80

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Solution for 8(r+3)=80 equation: 



8(r+3)=80

We move all terms to the left:

8(r+3)-(80)=0

We multiply parentheses

8r+24-80=0

We add all the numbers together, and all the variables

8r-56=0

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

8r=56

r=56/8

r=7

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