240-3*40=X

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Solution for 240-3*40=X equation:


Simplifying
240 + -3 * 40 = X

Multiply -3 * 40
240 + -120 = X

Combine like terms: 240 + -120 = 120
120 = X

Solving
120 = X

Solving for variable 'X'.

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

Add '-1X' to each side of the equation.
120 + -1X = X + -1X

Combine like terms: X + -1X = 0
120 + -1X = 0

Add '-120' to each side of the equation.
120 + -120 + -1X = 0 + -120

Combine like terms: 120 + -120 = 0
0 + -1X = 0 + -120
-1X = 0 + -120

Combine like terms: 0 + -120 = -120
-1X = -120

Divide each side by '-1'.
X = 120

Simplifying
X = 120

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