-21=3/13x

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Solution for -21=3/13x equation: 



-21=3/13x

We move all terms to the left:

-21-(3/13x)=0



Domain of the equation: 13x)!=0

x!=0/1

x!=0

x∈R



We add all the numbers together, and all the variables

-(+3/13x)-21=0

We get rid of parentheses

-3/13x-21=0

We multiply all the terms by the denominator


-21*13x-3=0

Wy multiply elements

-273x-3=0

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

-273x=3

x=3/-273

x=-1/91

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