-7u/2=21

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Solution for -7u/2=21 equation: 



-7u/2=21

We move all terms to the left:

-7u/2-(21)=0

We multiply all the terms by the denominator


-7u-21*2=0

We add all the numbers together, and all the variables

-7u-42=0

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

-7u=42

u=42/-7

u=-6

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