12+1-2a+6a=7a-2

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Solution for 12+1-2a+6a=7a-2 equation: 



12+1-2a+6a=7a-2

We move all terms to the left:

12+1-2a+6a-(7a-2)=0

We add all the numbers together, and all the variables

4a-(7a-2)+13=0

We get rid of parentheses

4a-7a+2+13=0

We add all the numbers together, and all the variables

-3a+15=0

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

-3a=-15

a=-15/-3

a=+5

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