2-(a+3)+5a=15

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Solution for 2-(a+3)+5a=15 equation: 



2-(a+3)+5a=15

We move all terms to the left:

2-(a+3)+5a-(15)=0

We add all the numbers together, and all the variables

5a-(a+3)-13=0

We get rid of parentheses

5a-a-3-13=0

We add all the numbers together, and all the variables

4a-16=0

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

4a=16

a=16/4

a=4

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