21x-3=3x-6

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



21x-3=3x-6

We move all terms to the left:

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

We get rid of parentheses

21x-3x+6-3=0

We add all the numbers together, and all the variables

18x+3=0

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

18x=-3

x=-3/18

x=-1/6

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