a+(1-1)b-1=5

Solution for a+(1-1)b-1=5 equation:

Simplifying
a + (1 + -1) * b + -1 = 5

Combine like terms: 1 + -1 = 0
a + (0) * b + -1 = 5

Anything times zero is zero.
a + 0b + -1 = 5

Reorder the terms:
0 + -1 + a = 5

Combine like terms: 0 + -1 = -1
-1 + a = 5

Solving
-1 + a = 5

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 + a = 5 + 1

Combine like terms: -1 + 1 = 0
0 + a = 5 + 1
a = 5 + 1

Combine like terms: 5 + 1 = 6
a = 6

Simplifying
a = 6