X-80=21

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Solution for X-80=21 equation: 


Simplifying
X + -80 = 21

Reorder the terms:
-80 + X = 21

Solving
-80 + X = 21

Solving for variable 'X'.

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

Add '80' to each side of the equation.
-80 + 80 + X = 21 + 80

Combine like terms: -80 + 80 = 0
0 + X = 21 + 80
X = 21 + 80

Combine like terms: 21 + 80 = 101
X = 101

Simplifying
X = 101

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