2+(-a)=18

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Solution for 2+(-a)=18 equation: 


Simplifying
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 = 16
(-1a) = 16

Divide each side by '-1'.
a = -16

Simplifying
a = -16

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