x-21=40;x

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Solution for x-21=40;x equation:



x-21=40x
We move all terms to the left:
x-21-(40x)=0
We add all the numbers together, and all the variables
-39x-21=0
We move all terms containing x to the left, all other terms to the right
-39x=21
x=21/-39
x=-7/13

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