72-x=51

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Solution for 72-x=51 equation: 


Simplifying
72 + -1x = 51

Solving
72 + -1x = 51

Solving for variable 'x'.

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

Add '-72' to each side of the equation.
72 + -72 + -1x = 51 + -72

Combine like terms: 72 + -72 = 0
0 + -1x = 51 + -72
-1x = 51 + -72

Combine like terms: 51 + -72 = -21
-1x = -21

Divide each side by '-1'.
x = 21

Simplifying
x = 21

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