2a+2(a+15)=102

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Solution for 2a+2(a+15)=102 equation: 



2a+2(a+15)=102

We move all terms to the left:

2a+2(a+15)-(102)=0

We multiply parentheses

2a+2a+30-102=0

We add all the numbers together, and all the variables

4a-72=0

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

4a=72

a=72/4

a=18

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