u/21=19

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Solution for u/21=19 equation: 



u/21=19

We move all terms to the left:

u/21-(19)=0

We multiply all the terms by the denominator


u-19*21=0

We add all the numbers together, and all the variables

u-399=0

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

u=399

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