-20=4(3x-4)-9x

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Solution for -20=4(3x-4)-9x equation:


Simplifying
-20 = 4(3x + -4) + -9x

Reorder the terms:
-20 = 4(-4 + 3x) + -9x
-20 = (-4 * 4 + 3x * 4) + -9x
-20 = (-16 + 12x) + -9x

Combine like terms: 12x + -9x = 3x
-20 = -16 + 3x

Solving
-20 = -16 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
-20 + -3x = -16 + 3x + -3x

Combine like terms: 3x + -3x = 0
-20 + -3x = -16 + 0
-20 + -3x = -16

Add '20' to each side of the equation.
-20 + 20 + -3x = -16 + 20

Combine like terms: -20 + 20 = 0
0 + -3x = -16 + 20
-3x = -16 + 20

Combine like terms: -16 + 20 = 4
-3x = 4

Divide each side by '-3'.
x = -1.333333333

Simplifying
x = -1.333333333

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