3(x+4)-6x=21

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Solution for 3(x+4)-6x=21 equation: 



3(x+4)-6x=21

We move all terms to the left:

3(x+4)-6x-(21)=0

We add all the numbers together, and all the variables

-6x+3(x+4)-21=0

We multiply parentheses

-6x+3x+12-21=0

We add all the numbers together, and all the variables

-3x-9=0

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

-3x=9

x=9/-3

x=-3

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