4a+15=3+7a

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



4a+15=3+7a

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

4a-7a-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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