72+x=100

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Solution for 72+x=100 equation: 


Simplifying
72 + x = 100

Solving
72 + x = 100

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 + x = 100 + -72

Combine like terms: 72 + -72 = 0
0 + x = 100 + -72
x = 100 + -72

Combine like terms: 100 + -72 = 28
x = 28

Simplifying
x = 28

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