X-1+x=21

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Solution for X-1+x=21 equation:


Simplifying
X + -1 + x = 21

Reorder the terms:
-1 + X + x = 21

Solving
-1 + X + x = 21

Solving for variable 'X'.

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

Add '1' to each side of the equation.
-1 + X + 1 + x = 21 + 1

Reorder the terms:
-1 + 1 + X + x = 21 + 1

Combine like terms: -1 + 1 = 0
0 + X + x = 21 + 1
X + x = 21 + 1

Combine like terms: 21 + 1 = 22
X + x = 22

Add '-1x' to each side of the equation.
X + x + -1x = 22 + -1x

Combine like terms: x + -1x = 0
X + 0 = 22 + -1x
X = 22 + -1x

Simplifying
X = 22 + -1x

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