6x-57=21

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Solution for 6x-57=21 equation: 



6x-57=21

We move all terms to the left:

6x-57-(21)=0

We add all the numbers together, and all the variables

6x-78=0

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

6x=78

x=78/6

x=13

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