-3a-(8-2a)=-20

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Solution for -3a-(8-2a)=-20 equation: 



-3a-(8-2a)=-20

We move all terms to the left:

-3a-(8-2a)-(-20)=0

We add all the numbers together, and all the variables

-3a-(-2a+8)-(-20)=0

We add all the numbers together, and all the variables

-3a-(-2a+8)+20=0

We get rid of parentheses

-3a+2a-8+20=0

We add all the numbers together, and all the variables

-1a+12=0

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

-a=-12

a=-12/-1

a=+12

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