100-3x=5x+120

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Solution for 100-3x=5x+120 equation:


Simplifying
100 + -3x = 5x + 120

Reorder the terms:
100 + -3x = 120 + 5x

Solving
100 + -3x = 120 + 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.
100 + -3x + -5x = 120 + 5x + -5x

Combine like terms: -3x + -5x = -8x
100 + -8x = 120 + 5x + -5x

Combine like terms: 5x + -5x = 0
100 + -8x = 120 + 0
100 + -8x = 120

Add '-100' to each side of the equation.
100 + -100 + -8x = 120 + -100

Combine like terms: 100 + -100 = 0
0 + -8x = 120 + -100
-8x = 120 + -100

Combine like terms: 120 + -100 = 20
-8x = 20

Divide each side by '-8'.
x = -2.5

Simplifying
x = -2.5

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