-3(2a-4)=15

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Solution for -3(2a-4)=15 equation: 



-3(2a-4)=15

We move all terms to the left:

-3(2a-4)-(15)=0

We multiply parentheses

-6a+12-15=0

We add all the numbers together, and all the variables

-6a-3=0

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

-6a=3

a=3/-6

a=-1/2

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