-12+-a=4a+-7

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



-12+-a=4a+-7

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

-1a-(4a-7)=0

We get rid of parentheses

-1a-4a+7=0

We add all the numbers together, and all the variables

-5a+7=0

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

-5a=-7

a=-7/-5

a=1+2/5

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