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2y+6=1/3y-1.33333333333333333333333333
We move all terms to the left:
2y+6-(1/3y-1.33333333333333333333333333)=0
Domain of the equation: 3y-1.33333333333333333333333333)!=0We add all the numbers together, and all the variables
y∈R
2y-(1/3y-1.3333333333333)+6=0
We get rid of parentheses
2y-1/3y+1.3333333333333+6=0
We multiply all the terms by the denominator
2y*3y+(1.3333333333333)*3y+6*3y-1=0
We multiply parentheses
2y*3y+3.9999999999999y+6*3y-1=0
Wy multiply elements
6y^2+3.9999999999999y+18y-1=0
We add all the numbers together, and all the variables
6y^2+22y-1=0
a = 6; b = 22; c = -1;
Δ = b2-4ac
Δ = 222-4·6·(-1)
Δ = 508
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}$$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{508}=\sqrt{4*127}=\sqrt{4}*\sqrt{127}=2\sqrt{127}$$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(22)-2\sqrt{127}}{2*6}=\frac{-22-2\sqrt{127}}{12} $$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(22)+2\sqrt{127}}{2*6}=\frac{-22+2\sqrt{127}}{12} $
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