3/4x+20=2+1/2x-1

Solution for 3/4x+20=2+1/2x-1 equation:

3/4x+20=2+1/2x-1

We move all terms to the left:

3/4x+20-(2+1/2x-1)=0


Domain of the equation: 4x!=0

x!=0/4

x!=0

x∈R



Domain of the equation: 2x-1)!=0

x∈R


We add all the numbers together, and all the variables

3/4x-(1/2x+1)+20=0

We get rid of parentheses

3/4x-1/2x-1+20=0

We calculate fractions


6x/8x^2+(-4x)/8x^2-1+20=0

We add all the numbers together, and all the variables

6x/8x^2+(-4x)/8x^2+19=0

We multiply all the terms by the denominator


6x+(-4x)+19*8x^2=0

Wy multiply elements

152x^2+6x+(-4x)=0

We get rid of parentheses

152x^2+6x-4x=0

We add all the numbers together, and all the variables

152x^2+2x=0

a = 152; b = 2; c = 0;
Δ = b2-4ac
Δ = 22-4·152·0
Δ = 4
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{4}=2$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(2)-2}{2*152}=\frac{-4}{304}
=-1/76
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(2)+2}{2*152}=\frac{0}{304}
=0
$