6+4a=7a-12

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Solution for 6+4a=7a-12 equation: 



6+4a=7a-12

We move all terms to the left:

6+4a-(7a-12)=0

We get rid of parentheses

4a-7a+12+6=0

We add all the numbers together, and all the variables

-3a+18=0

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

-3a=-18

a=-18/-3

a=+6

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