3x+20=120

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Solution for 3x+20=120 equation: 


Simplifying
3x + 20 = 120

Reorder the terms:
20 + 3x = 120

Solving
20 + 3x = 120

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + 3x = 120 + -20

Combine like terms: 20 + -20 = 0
0 + 3x = 120 + -20
3x = 120 + -20

Combine like terms: 120 + -20 = 100
3x = 100

Divide each side by '3'.
x = 33.33333333

Simplifying
x = 33.33333333

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