9x+128=5x+42

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Solution for 9x+128=5x+42 equation:


Simplifying
9x + 128 = 5x + 42

Reorder the terms:
128 + 9x = 5x + 42

Reorder the terms:
128 + 9x = 42 + 5x

Solving
128 + 9x = 42 + 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 + 9x + -5x = 42 + 5x + -5x

Combine like terms: 9x + -5x = 4x
128 + 4x = 42 + 5x + -5x

Combine like terms: 5x + -5x = 0
128 + 4x = 42 + 0
128 + 4x = 42

Add '-128' to each side of the equation.
128 + -128 + 4x = 42 + -128

Combine like terms: 128 + -128 = 0
0 + 4x = 42 + -128
4x = 42 + -128

Combine like terms: 42 + -128 = -86
4x = -86

Divide each side by '4'.
x = -21.5

Simplifying
x = -21.5

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