6x-42=84

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Solution for 6x-42=84 equation: 



6x-42=84

We move all terms to the left:

6x-42-(84)=0

We add all the numbers together, and all the variables

6x-126=0

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

6x=126

x=126/6

x=21

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