21x-1=40x

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Solution for 21x-1=40x equation: 



21x-1=40x

We move all terms to the left:

21x-1-(40x)=0

We add all the numbers together, and all the variables

-19x-1=0

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

-19x=1

x=1/-19

x=-1/19

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