a-1+12=7a-25

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Solution for a-1+12=7a-25 equation: 



a-1+12=7a-25

We move all terms to the left:

a-1+12-(7a-25)=0

We add all the numbers together, and all the variables

a-(7a-25)+11=0

We get rid of parentheses

a-7a+25+11=0

We add all the numbers together, and all the variables

-6a+36=0

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

-6a=-36

a=-36/-6

a=+6

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