29 times 1 is 29, but what is the answer if both 29 and 1 are negative numbers? Here we will determine if the answer to negative 29 times negative 1 is positive 29 or negative 29.
There are many different ways to explain and determine if the answer to negative 29 times negative 1 is -29 or +29 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 -29 is the correct answer using basic algebra.
We will test if -29 is correct by setting up the equation negative 29 times negative 1 equals negative 29, and then simplifying the equation to see if it is true.
(-29) (-1) = (-29)
Divide both sides of the equation by (-1) :
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| = |
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The numerator and denominator on the left side both have (-1) which even each other out and can be removed:
| (-29) = |
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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:
| (-29) = |
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A numerator of 29 and denominator of 1 on the right side is the same as 29 divided by 1 which is 29. Now we end up with this untrue equation:
(-29) = (29)
-29 is NOT equal to 29, thus we have proven that negative 29 times negative 1 is not equal to -29. The answer must therefore be 29:
-29 x -1 = 29
The above applies to all math problems where you multiply two negative numbers. Multiplying two negative numbers such as negative 29 times negative 1 will always have a positive answer.
Negative Times Negative Calculator
Here you can multiply another two negative numbers together.
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