3/4x=3x+1

Solution for 3/4x=3x+1 equation:

3/4x=3x+1

We move all terms to the left:

3/4x-(3x+1)=0


Domain of the equation: 4x!=0

x!=0/4

x!=0

x∈R


We get rid of parentheses

3/4x-3x-1=0

We multiply all the terms by the denominator


-3x*4x-1*4x+3=0

Wy multiply elements

-12x^2-4x+3=0

a = -12; b = -4; c = +3;
Δ = b2-4ac
Δ = -42-4·(-12)·3
Δ = 160
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{160}=\sqrt{16*10}=\sqrt{16}*\sqrt{10}=4\sqrt{10}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-4)-4\sqrt{10}}{2*-12}=\frac{4-4\sqrt{10}}{-24}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-4)+4\sqrt{10}}{2*-12}=\frac{4+4\sqrt{10}}{-24}
$