8+a-20+3a=-12+4a

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Solution for 8+a-20+3a=-12+4a equation: 



8+a-20+3a=-12+4a

We move all terms to the left:

8+a-20+3a-(-12+4a)=0

We add all the numbers together, and all the variables

a+3a-(4a-12)+8-20=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

4a-4a+12-12=0

We add all the numbers together, and all the variables

=0

a=0/1

a=0

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