31-7x=-4(x-4)-8x

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Solution for 31-7x=-4(x-4)-8x equation:


Simplifying
31 + -7x = -4(x + -4) + -8x

Reorder the terms:
31 + -7x = -4(-4 + x) + -8x
31 + -7x = (-4 * -4 + x * -4) + -8x
31 + -7x = (16 + -4x) + -8x

Combine like terms: -4x + -8x = -12x
31 + -7x = 16 + -12x

Solving
31 + -7x = 16 + -12x

Solving for variable 'x'.

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

Add '12x' to each side of the equation.
31 + -7x + 12x = 16 + -12x + 12x

Combine like terms: -7x + 12x = 5x
31 + 5x = 16 + -12x + 12x

Combine like terms: -12x + 12x = 0
31 + 5x = 16 + 0
31 + 5x = 16

Add '-31' to each side of the equation.
31 + -31 + 5x = 16 + -31

Combine like terms: 31 + -31 = 0
0 + 5x = 16 + -31
5x = 16 + -31

Combine like terms: 16 + -31 = -15
5x = -15

Divide each side by '5'.
x = -3

Simplifying
x = -3

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