-3(2a-3)+1=-20

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Solution for -3(2a-3)+1=-20 equation: 



-3(2a-3)+1=-20

We move all terms to the left:

-3(2a-3)+1-(-20)=0

We add all the numbers together, and all the variables

-3(2a-3)+21=0

We multiply parentheses

-6a+9+21=0

We add all the numbers together, and all the variables

-6a+30=0

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

-6a=-30

a=-30/-6

a=+5

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