4(a-3)=-20

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Solution for 4(a-3)=-20 equation: 



4(a-3)=-20

We move all terms to the left:

4(a-3)-(-20)=0

We add all the numbers together, and all the variables

4(a-3)+20=0

We multiply parentheses

4a-12+20=0

We add all the numbers together, and all the variables

4a+8=0

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

4a=-8

a=-8/4

a=-2

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