7(2r+3)=91

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Solution for 7(2r+3)=91 equation: 



7(2r+3)=91

We move all terms to the left:

7(2r+3)-(91)=0

We multiply parentheses

14r+21-91=0

We add all the numbers together, and all the variables

14r-70=0

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

14r=70

r=70/14

r=5

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