128-4x=5x+20

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Solution for 128-4x=5x+20 equation:


Simplifying
128 + -4x = 5x + 20

Reorder the terms:
128 + -4x = 20 + 5x

Solving
128 + -4x = 20 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
128 + -4x + -5x = 20 + 5x + -5x

Combine like terms: -4x + -5x = -9x
128 + -9x = 20 + 5x + -5x

Combine like terms: 5x + -5x = 0
128 + -9x = 20 + 0
128 + -9x = 20

Add '-128' to each side of the equation.
128 + -128 + -9x = 20 + -128

Combine like terms: 128 + -128 = 0
0 + -9x = 20 + -128
-9x = 20 + -128

Combine like terms: 20 + -128 = -108
-9x = -108

Divide each side by '-9'.
x = 12

Simplifying
x = 12

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