-2x-21=81

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Solution for -2x-21=81 equation: 


Simplifying
-2x + -21 = 81

Reorder the terms:
-21 + -2x = 81

Solving
-21 + -2x = 81

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 + -2x = 81 + 21

Combine like terms: -21 + 21 = 0
0 + -2x = 81 + 21
-2x = 81 + 21

Combine like terms: 81 + 21 = 102
-2x = 102

Divide each side by '-2'.
x = -51

Simplifying
x = -51

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