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8/y-2=12/2y-8
We move all terms to the left:
8/y-2-(12/2y-8)=0
Domain of the equation: y!=0
y∈R
Domain of the equation: 2y-8)!=0We get rid of parentheses
y∈R
8/y-12/2y+8-2=0
We calculate fractions
16y/2y^2+(-12y)/2y^2+8-2=0
We add all the numbers together, and all the variables
16y/2y^2+(-12y)/2y^2+6=0
We multiply all the terms by the denominator
16y+(-12y)+6*2y^2=0
Wy multiply elements
12y^2+16y+(-12y)=0
We get rid of parentheses
12y^2+16y-12y=0
We add all the numbers together, and all the variables
12y^2+4y=0
a = 12; b = 4; c = 0;
Δ = b2-4ac
Δ = 42-4·12·0
Δ = 16
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{16}=4$$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(4)-4}{2*12}=\frac{-8}{24} =-1/3 $$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(4)+4}{2*12}=\frac{0}{24} =0 $
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