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

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Solution for X+3-8=6x+3x-21 equation: 



X+3-8=6X+3X-21

We move all terms to the left:

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

We add all the numbers together, and all the variables

X-(9X-21)+3-8=0

We add all the numbers together, and all the variables

X-(9X-21)-5=0

We get rid of parentheses

X-9X+21-5=0

We add all the numbers together, and all the variables

-8X+16=0

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

-8X=-16

X=-16/-8

X=+2

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