4/6y+1/2y-3=12

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Solution for 4/6y+1/2y-3=12 equation:



4/6y+1/2y-3=12
We move all terms to the left:
4/6y+1/2y-3-(12)=0
Domain of the equation: 6y!=0
y!=0/6
y!=0
y∈R
Domain of the equation: 2y!=0
y!=0/2
y!=0
y∈R
We add all the numbers together, and all the variables
4/6y+1/2y-15=0
We calculate fractions
8y/12y^2+6y/12y^2-15=0
We multiply all the terms by the denominator
8y+6y-15*12y^2=0
We add all the numbers together, and all the variables
14y-15*12y^2=0
Wy multiply elements
-180y^2+14y=0
a = -180; b = 14; c = 0;
Δ = b2-4ac
Δ = 142-4·(-180)·0
Δ = 196
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{196}=14$
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(14)-14}{2*-180}=\frac{-28}{-360} =7/90 $
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(14)+14}{2*-180}=\frac{0}{-360} =0 $

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