128-3x=5x+15

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Solution for 128-3x=5x+15 equation:


Simplifying
128 + -3x = 5x + 15

Reorder the terms:
128 + -3x = 15 + 5x

Solving
128 + -3x = 15 + 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 + -3x + -5x = 15 + 5x + -5x

Combine like terms: -3x + -5x = -8x
128 + -8x = 15 + 5x + -5x

Combine like terms: 5x + -5x = 0
128 + -8x = 15 + 0
128 + -8x = 15

Add '-128' to each side of the equation.
128 + -128 + -8x = 15 + -128

Combine like terms: 128 + -128 = 0
0 + -8x = 15 + -128
-8x = 15 + -128

Combine like terms: 15 + -128 = -113
-8x = -113

Divide each side by '-8'.
x = 14.125

Simplifying
x = 14.125

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