40-x=72

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Solution for 40-x=72 equation:


Simplifying
40 + -1x = 72

Solving
40 + -1x = 72

Solving for variable 'x'.

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

Add '-40' to each side of the equation.
40 + -40 + -1x = 72 + -40

Combine like terms: 40 + -40 = 0
0 + -1x = 72 + -40
-1x = 72 + -40

Combine like terms: 72 + -40 = 32
-1x = 32

Divide each side by '-1'.
x = -32

Simplifying
x = -32

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