7(8+r)=84

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Solution for 7(8+r)=84 equation: 



7(8+r)=84

We move all terms to the left:

7(8+r)-(84)=0

We add all the numbers together, and all the variables

7(r+8)-84=0

We multiply parentheses

7r+56-84=0

We add all the numbers together, and all the variables

7r-28=0

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

7r=28

r=28/7

r=4

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