(-a)*(-b)=a*b

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


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

Remove parenthesis around (-1a)
-1a(-1b) = a * b

Remove parenthesis around (-1b)
-1a * -1b = a * b

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

Multiply -1 * -1
1a * b = a * b

Multiply a * b
1ab = a * b

Multiply a * b
1ab = ab

Solving
1ab = ab

Solving for variable 'a'.

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

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

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

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

Simplifying
0 = 0

The solution to this equation could not be determined.

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