21-3=6x

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Solution for 21-3=6x equation: 



21-3=6x

We move all terms to the left:

21-3-(6x)=0

We add all the numbers together, and all the variables

-6x+18=0

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

-6x=-18

x=-18/-6

x=+3

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