a+12=4a-5

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Solution for a+12=4a-5 equation: 



a+12=4a-5

We move all terms to the left:

a+12-(4a-5)=0

We get rid of parentheses

a-4a+5+12=0

We add all the numbers together, and all the variables

-3a+17=0

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

-3a=-17

a=-17/-3

a=5+2/3

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