-21=7/4x

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Solution for -21=7/4x equation: 



-21=7/4x

We move all terms to the left:

-21-(7/4x)=0



Domain of the equation: 4x)!=0

x!=0/1

x!=0

x∈R



We add all the numbers together, and all the variables

-(+7/4x)-21=0

We get rid of parentheses

-7/4x-21=0

We multiply all the terms by the denominator


-21*4x-7=0

Wy multiply elements

-84x-7=0

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

-84x=7

x=7/-84

x=-1/12

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