7(-3x)=84

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Solution for 7(-3x)=84 equation: 



7(-3x)=84

We move all terms to the left:

7(-3x)-(84)=0

We multiply parentheses

-21x-84=0

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

-21x=84

x=84/-21

x=-4

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