2a+9(a+1)=130

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Solution for 2a+9(a+1)=130 equation: 



2a+9(a+1)=130

We move all terms to the left:

2a+9(a+1)-(130)=0

We multiply parentheses

2a+9a+9-130=0

We add all the numbers together, and all the variables

11a-121=0

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

11a=121

a=121/11

a=11

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