x-20=-21

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Solution for x-20=-21 equation: 


Simplifying
x + -20 = -21

Reorder the terms:
-20 + x = -21

Solving
-20 + x = -21

Solving for variable 'x'.

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

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

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

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

Simplifying
x = -1

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