7a-3=3a+12

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Solution for 7a-3=3a+12 equation: 



7a-3=3a+12

We move all terms to the left:

7a-3-(3a+12)=0

We get rid of parentheses

7a-3a-12-3=0

We add all the numbers together, and all the variables

4a-15=0

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

4a=15

a=15/4

a=3+3/4

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