3(r+7)=72

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Solution for 3(r+7)=72 equation: 



3(r+7)=72

We move all terms to the left:

3(r+7)-(72)=0

We multiply parentheses

3r+21-72=0

We add all the numbers together, and all the variables

3r-51=0

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

3r=51

r=51/3

r=17

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