21=3/2u

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Solution for 21=3/2u equation: 



21=3/2u

We move all terms to the left:

21-(3/2u)=0



Domain of the equation: 2u)!=0

u!=0/1

u!=0

u∈R



We add all the numbers together, and all the variables

-(+3/2u)+21=0

We get rid of parentheses

-3/2u+21=0

We multiply all the terms by the denominator


21*2u-3=0

Wy multiply elements

42u-3=0

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

42u=3

u=3/42

u=1/14

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