4+3a-12=a-18+15

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Solution for 4+3a-12=a-18+15 equation: 



4+3a-12=a-18+15

We move all terms to the left:

4+3a-12-(a-18+15)=0

We add all the numbers together, and all the variables

3a-(a-3)+4-12=0

We add all the numbers together, and all the variables

3a-(a-3)-8=0

We get rid of parentheses

3a-a+3-8=0

We add all the numbers together, and all the variables

2a-5=0

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

2a=5

a=5/2

a=2+1/2

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