21+6x+3=15+3x-9x+9

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Solution for 21+6x+3=15+3x-9x+9 equation: 



21+6x+3=15+3x-9x+9

We move all terms to the left:

21+6x+3-(15+3x-9x+9)=0

We add all the numbers together, and all the variables

6x-(-6x+24)+21+3=0

We add all the numbers together, and all the variables

6x-(-6x+24)+24=0

We get rid of parentheses

6x+6x-24+24=0

We add all the numbers together, and all the variables

12x=0

x=0/12

x=0

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