12a-4(a-3)=15

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Solution for 12a-4(a-3)=15 equation: 



12a-4(a-3)=15

We move all terms to the left:

12a-4(a-3)-(15)=0

We multiply parentheses

12a-4a+12-15=0

We add all the numbers together, and all the variables

8a-3=0

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

8a=3

a=3/8

a=3/8

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