3a+15=3

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Solution for 3a+15=3 equation: 



3a+15=3

We move all terms to the left:

3a+15-(3)=0

We add all the numbers together, and all the variables

3a+12=0

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

3a=-12

a=-12/3

a=-4

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