120-3x=24+21

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Solution for 120-3x=24+21 equation: 


Simplifying
120 + -3x = 24 + 21

Combine like terms: 24 + 21 = 45
120 + -3x = 45

Solving
120 + -3x = 45

Solving for variable 'x'.

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

Add '-120' to each side of the equation.
120 + -120 + -3x = 45 + -120

Combine like terms: 120 + -120 = 0
0 + -3x = 45 + -120
-3x = 45 + -120

Combine like terms: 45 + -120 = -75
-3x = -75

Divide each side by '-3'.
x = 25

Simplifying
x = 25

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