47 times 89 is 4183, but what is the answer if both 47 and 89 are negative numbers? Here we will determine if the answer to negative 47 times negative 89 is positive 4183 or negative 4183.
There are many different ways to explain and determine if the answer to negative 47 times negative 89 is -4183 or +4183 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 -4183 is the correct answer using basic algebra.
We will test if -4183 is correct by setting up the equation negative 47 times negative 89 equals negative 4183, and then simplifying the equation to see if it is true.
(-47) (-89) = (-4183)
Divide both sides of the equation by (-89) :
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| = |
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The numerator and denominator on the left side both have (-89) which even each other out and can be removed:
| (-47) = |
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The numerator and denominator on the right side both have a minus sign (-) which even each other out and can be removed:
| (-47) = |
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A numerator of 4183 and denominator of 89 on the right side is the same as 4183 divided by 89 which is 47. Now we end up with this untrue equation:
(-47) = (47)
-47 is NOT equal to 47, thus we have proven that negative 47 times negative 89 is not equal to -4183. The answer must therefore be 4183:
-47 x -89 = 4183
The above applies to all math problems where you multiply two negative numbers. Multiplying two negative numbers such as negative 47 times negative 89 will always have a positive answer.
Negative Times Negative Calculator
Here you can multiply another two negative numbers together.
What is negative 47 times negative 90?
Here is the next problem on our list that we have explained and calculated.
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