x+6-6x=21

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



x+6-6x=21

We move all terms to the left:

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

We add all the numbers together, and all the variables

-5x-15=0

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

-5x=15

x=15/-5

x=-3

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