2(a+3)+5=-15

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



2(a+3)+5=-15

We move all terms to the left:

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

We add all the numbers together, and all the variables

2(a+3)+20=0

We multiply parentheses

2a+6+20=0

We add all the numbers together, and all the variables

2a+26=0

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

2a=-26

a=-26/2

a=-13

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