5x+42=9x-128

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


Simplifying
5x + 42 = 9x + -128

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

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

Solving
42 + 5x = -128 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
42 + 5x + -9x = -128 + 9x + -9x

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

Combine like terms: 9x + -9x = 0
42 + -4x = -128 + 0
42 + -4x = -128

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

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

Combine like terms: -128 + -42 = -170
-4x = -170

Divide each side by '-4'.
x = 42.5

Simplifying
x = 42.5

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