-(x+1)=21

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Solution for -(x+1)=21 equation: 


Simplifying
-1(x + 1) = 21

Reorder the terms:
-1(1 + x) = 21
(1 * -1 + x * -1) = 21
(-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 = 22
-1x = 22

Divide each side by '-1'.
x = -22

Simplifying
x = -22

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