-a-2=18

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Solution for -a-2=18 equation:


Simplifying
-1a + -2 = 18

Reorder the terms:
-2 + -1a = 18

Solving
-2 + -1a = 18

Solving for variable 'a'.

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

Add '2' to each side of the equation.
-2 + 2 + -1a = 18 + 2

Combine like terms: -2 + 2 = 0
0 + -1a = 18 + 2
-1a = 18 + 2

Combine like terms: 18 + 2 = 20
-1a = 20

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

Simplifying
a = -20

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