3+4a=2a+15

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Solution for 3+4a=2a+15 equation: 



3+4a=2a+15

We move all terms to the left:

3+4a-(2a+15)=0

We get rid of parentheses

4a-2a-15+3=0

We add all the numbers together, and all the variables

2a-12=0

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

2a=12

a=12/2

a=6

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