1-a*1=

Solution for 1-a*1= equation:

Simplifying
1 + -1a * 1 = 0

Reorder the terms for easier multiplication:
1 + -1 * 1a = 0

Multiply -1 * 1
1 + -1a = 0

Solving
1 + -1a = 0

Solving for variable 'a'.

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

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

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

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

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

Simplifying
a = 1