6-x-4x=21+3x

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Solution for 6-x-4x=21+3x equation: 



6-x-4x=21+3x

We move all terms to the left:

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

We add all the numbers together, and all the variables

-x-4x-(3x+21)+6=0

We add all the numbers together, and all the variables

-5x-(3x+21)+6=0

We get rid of parentheses

-5x-3x-21+6=0

We add all the numbers together, and all the variables

-8x-15=0

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

-8x=15

x=15/-8

x=-1+7/8

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