-4a+20+6a=9a-2a

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Solution for -4a+20+6a=9a-2a equation: 



-4a+20+6a=9a-2a

We move all terms to the left:

-4a+20+6a-(9a-2a)=0

We add all the numbers together, and all the variables

-4a+6a-(+7a)+20=0

We add all the numbers together, and all the variables

2a-(+7a)+20=0

We get rid of parentheses

2a-7a+20=0

We add all the numbers together, and all the variables

-5a+20=0

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

-5a=-20

a=-20/-5

a=+4

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