18-(-x)=3

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Solution for 18-(-x)=3 equation:


Simplifying
18 + -1(-1x) = 3

Remove parenthesis around (-1x)
18 + -1 * -1x = 3

Multiply -1 * -1
18 + 1x = 3

Solving
18 + 1x = 3

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + 1x = 3 + -18

Combine like terms: 18 + -18 = 0
0 + 1x = 3 + -18
1x = 3 + -18

Combine like terms: 3 + -18 = -15
1x = -15

Divide each side by '1'.
x = -15

Simplifying
x = -15

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