3+7(2r+8)=115

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Solution for 3+7(2r+8)=115 equation: 



3+7(2r+8)=115

We move all terms to the left:

3+7(2r+8)-(115)=0

We add all the numbers together, and all the variables

7(2r+8)-112=0

We multiply parentheses

14r+56-112=0

We add all the numbers together, and all the variables

14r-56=0

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

14r=56

r=56/14

r=4

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