3-8x=21-5x-x

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Solution for 3-8x=21-5x-x equation: 



3-8x=21-5x-x

We move all terms to the left:

3-8x-(21-5x-x)=0

We add all the numbers together, and all the variables

-8x-(-6x+21)+3=0

We get rid of parentheses

-8x+6x-21+3=0

We add all the numbers together, and all the variables

-2x-18=0

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

-2x=18

x=18/-2

x=-9

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