21x-42/3=-7

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Solution for 21x-42/3=-7 equation: 



21x-42/3=-7

We move all terms to the left:

21x-42/3-(-7)=0

We add all the numbers together, and all the variables

21x-7=0

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

21x=7

x=7/21

x=1/3

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