15-a-1=

Solution for 15-a-1= equation:

Simplifying
15 + -1a + -1 = 0

Reorder the terms:
15 + -1 + -1a = 0

Combine like terms: 15 + -1 = 14
14 + -1a = 0

Solving
14 + -1a = 0

Solving for variable 'a'.

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

Add '-14' to each side of the equation.
14 + -14 + -1a = 0 + -14

Combine like terms: 14 + -14 = 0
0 + -1a = 0 + -14
-1a = 0 + -14

Combine like terms: 0 + -14 = -14
-1a = -14

Divide each side by '-1'.
a = 14

Simplifying
a = 14