x-21=-20

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Solution for x-21=-20 equation: 


Simplifying
x + -21 = -20

Reorder the terms:
-21 + x = -20

Solving
-21 + x = -20

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + x = -20 + 21

Combine like terms: -21 + 21 = 0
0 + x = -20 + 21
x = -20 + 21

Combine like terms: -20 + 21 = 1
x = 1

Simplifying
x = 1

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