8a-3(2a+5)=15

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Solution for 8a-3(2a+5)=15 equation: 



8a-3(2a+5)=15

We move all terms to the left:

8a-3(2a+5)-(15)=0

We multiply parentheses

8a-6a-15-15=0

We add all the numbers together, and all the variables

2a-30=0

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

2a=30

a=30/2

a=15

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