18-x=15

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Solution for 18-x=15 equation:


Simplifying
18 + -1x = 15

Solving
18 + -1x = 15

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 = 15 + -18

Combine like terms: 18 + -18 = 0
0 + -1x = 15 + -18
-1x = 15 + -18

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

Divide each side by '-1'.
x = 3

Simplifying
x = 3

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