21x-3=40

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Solution for 21x-3=40 equation: 



21x-3=40

We move all terms to the left:

21x-3-(40)=0

We add all the numbers together, and all the variables

21x-43=0

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

21x=43

x=43/21

x=2+1/21

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