21=1/5x

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Solution for 21=1/5x equation: 



21=1/5x

We move all terms to the left:

21-(1/5x)=0



Domain of the equation: 5x)!=0

x!=0/1

x!=0

x∈R



We add all the numbers together, and all the variables

-(+1/5x)+21=0

We get rid of parentheses

-1/5x+21=0

We multiply all the terms by the denominator


21*5x-1=0

Wy multiply elements

105x-1=0

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

105x=1

x=1/105

x=1/105

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