7a+15=4a+3

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Solution for 7a+15=4a+3 equation: 



7a+15=4a+3

We move all terms to the left:

7a+15-(4a+3)=0

We get rid of parentheses

7a-4a-3+15=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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