6a-12=4a+18

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Solution for 6a-12=4a+18 equation: 



6a-12=4a+18

We move all terms to the left:

6a-12-(4a+18)=0

We get rid of parentheses

6a-4a-18-12=0

We add all the numbers together, and all the variables

2a-30=0

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

2a=30

a=30/2

a=15

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