X+-2=21

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Solution for X+-2=21 equation: 


Simplifying
X + -2 = 21

Reorder the terms:
-2 + X = 21

Solving
-2 + X = 21

Solving for variable 'X'.

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

Add '2' to each side of the equation.
-2 + 2 + X = 21 + 2

Combine like terms: -2 + 2 = 0
0 + X = 21 + 2
X = 21 + 2

Combine like terms: 21 + 2 = 23
X = 23

Simplifying
X = 23

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