2/7u=21

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Solution for 2/7u=21 equation: 



2/7u=21

We move all terms to the left:

2/7u-(21)=0



Domain of the equation: 7u!=0

u!=0/7

u!=0

u∈R



We multiply all the terms by the denominator


-21*7u+2=0

Wy multiply elements

-147u+2=0

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

-147u=-2

u=-2/-147

u=2/147

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