7x^2+12=(7x+1)(x-5)

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Solution for 7x^2+12=(7x+1)(x-5) equation:


Simplifying
7x2 + 12 = (7x + 1)(x + -5)

Reorder the terms:
12 + 7x2 = (7x + 1)(x + -5)

Reorder the terms:
12 + 7x2 = (1 + 7x)(x + -5)

Reorder the terms:
12 + 7x2 = (1 + 7x)(-5 + x)

Multiply (1 + 7x) * (-5 + x)
12 + 7x2 = (1(-5 + x) + 7x * (-5 + x))
12 + 7x2 = ((-5 * 1 + x * 1) + 7x * (-5 + x))
12 + 7x2 = ((-5 + 1x) + 7x * (-5 + x))
12 + 7x2 = (-5 + 1x + (-5 * 7x + x * 7x))
12 + 7x2 = (-5 + 1x + (-35x + 7x2))

Combine like terms: 1x + -35x = -34x
12 + 7x2 = (-5 + -34x + 7x2)

Add '-7x2' to each side of the equation.
12 + 7x2 + -7x2 = -5 + -34x + 7x2 + -7x2

Combine like terms: 7x2 + -7x2 = 0
12 + 0 = -5 + -34x + 7x2 + -7x2
12 = -5 + -34x + 7x2 + -7x2

Combine like terms: 7x2 + -7x2 = 0
12 = -5 + -34x + 0
12 = -5 + -34x

Solving
12 = -5 + -34x

Solving for variable 'x'.

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

Add '34x' to each side of the equation.
12 + 34x = -5 + -34x + 34x

Combine like terms: -34x + 34x = 0
12 + 34x = -5 + 0
12 + 34x = -5

Add '-12' to each side of the equation.
12 + -12 + 34x = -5 + -12

Combine like terms: 12 + -12 = 0
0 + 34x = -5 + -12
34x = -5 + -12

Combine like terms: -5 + -12 = -17
34x = -17

Divide each side by '34'.
x = -0.5

Simplifying
x = -0.5

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