3(2x+4)=21-3x

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Solution for 3(2x+4)=21-3x equation: 



3(2x+4)=21-3x

We move all terms to the left:

3(2x+4)-(21-3x)=0

We add all the numbers together, and all the variables

3(2x+4)-(-3x+21)=0

We multiply parentheses

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

We get rid of parentheses

6x+3x-21+12=0

We add all the numbers together, and all the variables

9x-9=0

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

9x=9

x=9/9

x=1

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