40-15-10=X

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Solution for 40-15-10=X equation: 


Simplifying
40 + -15 + -10 = X

Combine like terms: 40 + -15 = 25
25 + -10 = X

Combine like terms: 25 + -10 = 15
15 = X

Solving
15 = 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.
15 + -1X = X + -1X

Combine like terms: X + -1X = 0
15 + -1X = 0

Add '-15' to each side of the equation.
15 + -15 + -1X = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -1X = 0 + -15
-1X = 0 + -15

Combine like terms: 0 + -15 = -15
-1X = -15

Divide each side by '-1'.
X = 15

Simplifying
X = 15

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