(-13y-12)(9y+8)-(3y+4)(-13y-12)=0

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Solution for (-13y-12)(9y+8)-(3y+4)(-13y-12)=0 equation:


Simplifying
(-13y + -12)(9y + 8) + -1(3y + 4)(-13y + -12) = 0

Reorder the terms:
(-12 + -13y)(9y + 8) + -1(3y + 4)(-13y + -12) = 0

Reorder the terms:
(-12 + -13y)(8 + 9y) + -1(3y + 4)(-13y + -12) = 0

Multiply (-12 + -13y) * (8 + 9y)
(-12(8 + 9y) + -13y * (8 + 9y)) + -1(3y + 4)(-13y + -12) = 0
((8 * -12 + 9y * -12) + -13y * (8 + 9y)) + -1(3y + 4)(-13y + -12) = 0
((-96 + -108y) + -13y * (8 + 9y)) + -1(3y + 4)(-13y + -12) = 0
(-96 + -108y + (8 * -13y + 9y * -13y)) + -1(3y + 4)(-13y + -12) = 0
(-96 + -108y + (-104y + -117y2)) + -1(3y + 4)(-13y + -12) = 0

Combine like terms: -108y + -104y = -212y
(-96 + -212y + -117y2) + -1(3y + 4)(-13y + -12) = 0

Reorder the terms:
-96 + -212y + -117y2 + -1(4 + 3y)(-13y + -12) = 0

Reorder the terms:
-96 + -212y + -117y2 + -1(4 + 3y)(-12 + -13y) = 0

Multiply (4 + 3y) * (-12 + -13y)
-96 + -212y + -117y2 + -1(4(-12 + -13y) + 3y * (-12 + -13y)) = 0
-96 + -212y + -117y2 + -1((-12 * 4 + -13y * 4) + 3y * (-12 + -13y)) = 0
-96 + -212y + -117y2 + -1((-48 + -52y) + 3y * (-12 + -13y)) = 0
-96 + -212y + -117y2 + -1(-48 + -52y + (-12 * 3y + -13y * 3y)) = 0
-96 + -212y + -117y2 + -1(-48 + -52y + (-36y + -39y2)) = 0

Combine like terms: -52y + -36y = -88y
-96 + -212y + -117y2 + -1(-48 + -88y + -39y2) = 0
-96 + -212y + -117y2 + (-48 * -1 + -88y * -1 + -39y2 * -1) = 0
-96 + -212y + -117y2 + (48 + 88y + 39y2) = 0

Reorder the terms:
-96 + 48 + -212y + 88y + -117y2 + 39y2 = 0

Combine like terms: -96 + 48 = -48
-48 + -212y + 88y + -117y2 + 39y2 = 0

Combine like terms: -212y + 88y = -124y
-48 + -124y + -117y2 + 39y2 = 0

Combine like terms: -117y2 + 39y2 = -78y2
-48 + -124y + -78y2 = 0

Solving
-48 + -124y + -78y2 = 0

Solving for variable 'y'.

Factor out the Greatest Common Factor (GCF), '-2'.
-2(24 + 62y + 39y2) = 0

Factor a trinomial.
-2((12 + 13y)(2 + 3y)) = 0

Ignore the factor -2.

Subproblem 1

Set the factor '(12 + 13y)' equal to zero and attempt to solve: Simplifying 12 + 13y = 0 Solving 12 + 13y = 0 Move all terms containing y to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + 13y = 0 + -12 Combine like terms: 12 + -12 = 0 0 + 13y = 0 + -12 13y = 0 + -12 Combine like terms: 0 + -12 = -12 13y = -12 Divide each side by '13'. y = -0.9230769231 Simplifying y = -0.9230769231

Subproblem 2

Set the factor '(2 + 3y)' equal to zero and attempt to solve: Simplifying 2 + 3y = 0 Solving 2 + 3y = 0 Move all terms containing y to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 3y = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 3y = 0 + -2 3y = 0 + -2 Combine like terms: 0 + -2 = -2 3y = -2 Divide each side by '3'. y = -0.6666666667 Simplifying y = -0.6666666667

Solution

y = {-0.9230769231, -0.6666666667}

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