x(2x-2)+x(5x-5)=(7x+7)(x-4)

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Solution for x(2x-2)+x(5x-5)=(7x+7)(x-4) equation:


Simplifying
x(2x + -2) + x(5x + -5) = (7x + 7)(x + -4)

Reorder the terms:
x(-2 + 2x) + x(5x + -5) = (7x + 7)(x + -4)
(-2 * x + 2x * x) + x(5x + -5) = (7x + 7)(x + -4)
(-2x + 2x2) + x(5x + -5) = (7x + 7)(x + -4)

Reorder the terms:
-2x + 2x2 + x(-5 + 5x) = (7x + 7)(x + -4)
-2x + 2x2 + (-5 * x + 5x * x) = (7x + 7)(x + -4)
-2x + 2x2 + (-5x + 5x2) = (7x + 7)(x + -4)

Reorder the terms:
-2x + -5x + 2x2 + 5x2 = (7x + 7)(x + -4)

Combine like terms: -2x + -5x = -7x
-7x + 2x2 + 5x2 = (7x + 7)(x + -4)

Combine like terms: 2x2 + 5x2 = 7x2
-7x + 7x2 = (7x + 7)(x + -4)

Reorder the terms:
-7x + 7x2 = (7 + 7x)(x + -4)

Reorder the terms:
-7x + 7x2 = (7 + 7x)(-4 + x)

Multiply (7 + 7x) * (-4 + x)
-7x + 7x2 = (7(-4 + x) + 7x * (-4 + x))
-7x + 7x2 = ((-4 * 7 + x * 7) + 7x * (-4 + x))
-7x + 7x2 = ((-28 + 7x) + 7x * (-4 + x))
-7x + 7x2 = (-28 + 7x + (-4 * 7x + x * 7x))
-7x + 7x2 = (-28 + 7x + (-28x + 7x2))

Combine like terms: 7x + -28x = -21x
-7x + 7x2 = (-28 + -21x + 7x2)

Add '-7x2' to each side of the equation.
-7x + 7x2 + -7x2 = -28 + -21x + 7x2 + -7x2

Combine like terms: 7x2 + -7x2 = 0
-7x + 0 = -28 + -21x + 7x2 + -7x2
-7x = -28 + -21x + 7x2 + -7x2

Combine like terms: 7x2 + -7x2 = 0
-7x = -28 + -21x + 0
-7x = -28 + -21x

Solving
-7x = -28 + -21x

Solving for variable 'x'.

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

Add '21x' to each side of the equation.
-7x + 21x = -28 + -21x + 21x

Combine like terms: -7x + 21x = 14x
14x = -28 + -21x + 21x

Combine like terms: -21x + 21x = 0
14x = -28 + 0
14x = -28

Divide each side by '14'.
x = -2

Simplifying
x = -2

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