(a-1)(b-1)=

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

Simplifying
(a + -1)(b + -1) = 0

Reorder the terms:
(-1 + a)(b + -1) = 0

Reorder the terms:
(-1 + a)(-1 + b) = 0

Multiply (-1 + a) * (-1 + b)
(-1(-1 + b) + a(-1 + b)) = 0
((-1 * -1 + b * -1) + a(-1 + b)) = 0
((1 + -1b) + a(-1 + b)) = 0
(1 + -1b + (-1 * a + b * a)) = 0
(1 + -1b + (-1a + ab)) = 0

Reorder the terms:
(1 + -1a + ab + -1b) = 0
(1 + -1a + ab + -1b) = 0

Solving
1 + -1a + ab + -1b = 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 + -1a + ab + -1 + -1b = 0 + -1

Reorder the terms:
1 + -1 + -1a + ab + -1b = 0 + -1

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

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

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

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

Reorder the terms:
1 + -1a + ab + -1b = -1 + b + 1 + -1b

Reorder the terms:
1 + -1a + ab + -1b = -1 + 1 + b + -1b

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

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

The solution to this equation could not be determined.