15x-21=3-3x

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Solution for 15x-21=3-3x equation: 



15x-21=3-3x

We move all terms to the left:

15x-21-(3-3x)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

15x+3x-3-21=0

We add all the numbers together, and all the variables

18x-24=0

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

18x=24

x=24/18

x=1+1/3

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