3(3x+9)=21

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Solution for 3(3x+9)=21 equation: 



3(3x+9)=21

We move all terms to the left:

3(3x+9)-(21)=0

We multiply parentheses

9x+27-21=0

We add all the numbers together, and all the variables

9x+6=0

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

9x=-6

x=-6/9

x=-2/3

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