31-9x=-3(5x-4)

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Solution for 31-9x=-3(5x-4) equation:


Simplifying
31 + -9x = -3(5x + -4)

Reorder the terms:
31 + -9x = -3(-4 + 5x)
31 + -9x = (-4 * -3 + 5x * -3)
31 + -9x = (12 + -15x)

Solving
31 + -9x = 12 + -15x

Solving for variable 'x'.

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

Add '15x' to each side of the equation.
31 + -9x + 15x = 12 + -15x + 15x

Combine like terms: -9x + 15x = 6x
31 + 6x = 12 + -15x + 15x

Combine like terms: -15x + 15x = 0
31 + 6x = 12 + 0
31 + 6x = 12

Add '-31' to each side of the equation.
31 + -31 + 6x = 12 + -31

Combine like terms: 31 + -31 = 0
0 + 6x = 12 + -31
6x = 12 + -31

Combine like terms: 12 + -31 = -19
6x = -19

Divide each side by '6'.
x = -3.166666667

Simplifying
x = -3.166666667

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