5(x+4)(x-4)=(x-3)(5x+4)

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Solution for 5(x+4)(x-4)=(x-3)(5x+4) equation:


Simplifying
5(x + 4)(x + -4) = (x + -3)(5x + 4)

Reorder the terms:
5(4 + x)(x + -4) = (x + -3)(5x + 4)

Reorder the terms:
5(4 + x)(-4 + x) = (x + -3)(5x + 4)

Multiply (4 + x) * (-4 + x)
5(4(-4 + x) + x(-4 + x)) = (x + -3)(5x + 4)
5((-4 * 4 + x * 4) + x(-4 + x)) = (x + -3)(5x + 4)
5((-16 + 4x) + x(-4 + x)) = (x + -3)(5x + 4)
5(-16 + 4x + (-4 * x + x * x)) = (x + -3)(5x + 4)
5(-16 + 4x + (-4x + x2)) = (x + -3)(5x + 4)

Combine like terms: 4x + -4x = 0
5(-16 + 0 + x2) = (x + -3)(5x + 4)
5(-16 + x2) = (x + -3)(5x + 4)
(-16 * 5 + x2 * 5) = (x + -3)(5x + 4)
(-80 + 5x2) = (x + -3)(5x + 4)

Reorder the terms:
-80 + 5x2 = (-3 + x)(5x + 4)

Reorder the terms:
-80 + 5x2 = (-3 + x)(4 + 5x)

Multiply (-3 + x) * (4 + 5x)
-80 + 5x2 = (-3(4 + 5x) + x(4 + 5x))
-80 + 5x2 = ((4 * -3 + 5x * -3) + x(4 + 5x))
-80 + 5x2 = ((-12 + -15x) + x(4 + 5x))
-80 + 5x2 = (-12 + -15x + (4 * x + 5x * x))
-80 + 5x2 = (-12 + -15x + (4x + 5x2))

Combine like terms: -15x + 4x = -11x
-80 + 5x2 = (-12 + -11x + 5x2)

Add '-5x2' to each side of the equation.
-80 + 5x2 + -5x2 = -12 + -11x + 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
-80 + 0 = -12 + -11x + 5x2 + -5x2
-80 = -12 + -11x + 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
-80 = -12 + -11x + 0
-80 = -12 + -11x

Solving
-80 = -12 + -11x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '11x' to each side of the equation.
-80 + 11x = -12 + -11x + 11x

Combine like terms: -11x + 11x = 0
-80 + 11x = -12 + 0
-80 + 11x = -12

Add '80' to each side of the equation.
-80 + 80 + 11x = -12 + 80

Combine like terms: -80 + 80 = 0
0 + 11x = -12 + 80
11x = -12 + 80

Combine like terms: -12 + 80 = 68
11x = 68

Divide each side by '11'.
x = 6.181818182

Simplifying
x = 6.181818182

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