-5(9a+7)=20

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Solution for -5(9a+7)=20 equation: 



-5(9a+7)=20

We move all terms to the left:

-5(9a+7)-(20)=0

We multiply parentheses

-45a-35-20=0

We add all the numbers together, and all the variables

-45a-55=0

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

-45a=55

a=55/-45

a=-1+2/9

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