What is negative 99 times negative 43? (-99 x -43)

What is negative 99 times negative 43?

99 times 43 is 4257, but what is the answer if both 99 and 43 are negative numbers? Here we will determine if the answer to negative 99 times negative 43 is positive 4257 or negative 4257.

There are many different ways to explain and determine if the answer to negative 99 times negative 43 is -4257 or +4257 using mathematical terms such as additive inverse and mathematical laws like the Distribute Law.

We will take a different approach - process of elimination: We will simply test if -4257 is the correct answer using basic algebra.

We will test if -4257 is correct by setting up the equation negative 99 times negative 43 equals negative 4257, and then simplifying the equation to see if it is true.

(-99) (-43) = (-4257)

Divide both sides of the equation by (-43) :

		(-99) (-43)
		(-43)

		(-4257)
		(-43)

The numerator and denominator on the left side both have (-43) which even each other out and can be removed:

(-99) =

		(-4257)
		(-43)

The numerator and denominator on the right side both have a minus sign (-) which even each other out and can be removed:

(-99) =

		(4257)
		(43)

A numerator of 4257 and denominator of 43 on the right side is the same as 4257 divided by 43 which is 99. Now we end up with this untrue equation:

(-99) = (99)

-99 is NOT equal to 99, thus we have proven that negative 99 times negative 43 is not equal to -4257. The answer must therefore be 4257:

-99 x -43 = 4257

The above applies to all math problems where you multiply two negative numbers. Multiplying two negative numbers such as negative 99 times negative 43 will always have a positive answer.

Negative Times Negative Calculator
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