-7(9+3x)=42

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Solution for -7(9+3x)=42 equation: 



-7(9+3x)=42

We move all terms to the left:

-7(9+3x)-(42)=0

We add all the numbers together, and all the variables

-7(3x+9)-42=0

We multiply parentheses

-21x-63-42=0

We add all the numbers together, and all the variables

-21x-105=0

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

-21x=105

x=105/-21

x=-5

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