7(a+2)=91

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Solution for 7(a+2)=91 equation: 



7(a+2)=91

We move all terms to the left:

7(a+2)-(91)=0

We multiply parentheses

7a+14-91=0

We add all the numbers together, and all the variables

7a-77=0

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

7a=77

a=77/7

a=11

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