-x-1=c-21

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Solution for -x-1=c-21 equation: 


Simplifying
-1x + -1 = c + -21

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

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

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

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 + c

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

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

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

Simplifying
x = 20 + -1c

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