15=3a-8a

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Solution for 15=3a-8a equation:



15=3a-8a
We move all terms to the left:
15-(3a-8a)=0
We add all the numbers together, and all the variables
-(-5a)+15=0
We get rid of parentheses
5a+15=0
We move all terms containing a to the left, all other terms to the right
5a=-15
a=-15/5
a=-3

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