-9(3x+7)=45

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Solution for -9(3x+7)=45 equation: 



-9(3x+7)=45

We move all terms to the left:

-9(3x+7)-(45)=0

We multiply parentheses

-27x-63-45=0

We add all the numbers together, and all the variables

-27x-108=0

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

-27x=108

x=108/-27

x=-4

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