-5(3+a)=-20

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Solution for -5(3+a)=-20 equation: 



-5(3+a)=-20

We move all terms to the left:

-5(3+a)-(-20)=0

We add all the numbers together, and all the variables

-5(a+3)-(-20)=0

We add all the numbers together, and all the variables

-5(a+3)+20=0

We multiply parentheses

-5a-15+20=0

We add all the numbers together, and all the variables

-5a+5=0

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

-5a=-5

a=-5/-5

a=1

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