5/4y+6-1/3y=8

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Solution for 5/4y+6-1/3y=8 equation:



5/4y+6-1/3y=8
We move all terms to the left:
5/4y+6-1/3y-(8)=0
Domain of the equation: 4y!=0
y!=0/4
y!=0
y∈R
Domain of the equation: 3y!=0
y!=0/3
y!=0
y∈R
We add all the numbers together, and all the variables
5/4y-1/3y-2=0
We calculate fractions
15y/12y^2+(-4y)/12y^2-2=0
We multiply all the terms by the denominator
15y+(-4y)-2*12y^2=0
Wy multiply elements
-24y^2+15y+(-4y)=0
We get rid of parentheses
-24y^2+15y-4y=0
We add all the numbers together, and all the variables
-24y^2+11y=0
a = -24; b = 11; c = 0;
Δ = b2-4ac
Δ = 112-4·(-24)·0
Δ = 121
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{121}=11$
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(11)-11}{2*-24}=\frac{-22}{-48} =11/24 $
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(11)+11}{2*-24}=\frac{0}{-48} =0 $

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