-x-1=-21

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Solution for -x-1=-21 equation:


Simplifying
-1x + -1 = -21

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

Solving
-1 + -1x = -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 + 1 + -1x = -21 + 1

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

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

Divide each side by '-1'.
x = 20

Simplifying
x = 20

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