-15+4a=a-6

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Solution for -15+4a=a-6 equation: 



-15+4a=a-6

We move all terms to the left:

-15+4a-(a-6)=0

We get rid of parentheses

4a-a+6-15=0

We add all the numbers together, and all the variables

3a-9=0

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

3a=9

a=9/3

a=3

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