7=4x+42/x

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Solution for 7=4x+42/x equation: 



7=4x+42/x

We move all terms to the left:

7-(4x+42/x)=0



Domain of the equation: x)!=0

x!=0/1

x!=0

x∈R



We add all the numbers together, and all the variables

-(+4x+42/x)+7=0

We get rid of parentheses

-4x-42/x+7=0

We multiply all the terms by the denominator


-4x*x+7*x-42=0

We add all the numbers together, and all the variables

7x-4x*x-42=0

Wy multiply elements

-4x^2+7x-42=0

a = -4; b = 7; c = -42;
Δ = b2-4ac
Δ = 72-4·(-4)·(-42)
Δ = -623
Delta is less than zero, so there is no solution for the equation

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