-x+4(x-4)=-31

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Solution for -x+4(x-4)=-31 equation:


Simplifying
-1x + 4(x + -4) = -31

Reorder the terms:
-1x + 4(-4 + x) = -31
-1x + (-4 * 4 + x * 4) = -31
-1x + (-16 + 4x) = -31

Reorder the terms:
-16 + -1x + 4x = -31

Combine like terms: -1x + 4x = 3x
-16 + 3x = -31

Solving
-16 + 3x = -31

Solving for variable 'x'.

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

Add '16' to each side of the equation.
-16 + 16 + 3x = -31 + 16

Combine like terms: -16 + 16 = 0
0 + 3x = -31 + 16
3x = -31 + 16

Combine like terms: -31 + 16 = -15
3x = -15

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

Simplifying
x = -5

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