93 times 7 is 651, but what is the answer if both 93 and 7 are negative numbers? Here we will determine if the answer to negative 93 times negative 7 is positive 651 or negative 651.
There are many different ways to explain and determine if the answer to negative 93 times negative 7 is -651 or +651 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 -651 is the correct answer using basic algebra.
We will test if -651 is correct by setting up the equation negative 93 times negative 7 equals negative 651, and then simplifying the equation to see if it is true.
(-93) (-7) = (-651)
Divide both sides of the equation by (-7) :
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| = |
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The numerator and denominator on the left side both have (-7) which even each other out and can be removed:
| (-93) = |
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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:
| (-93) = |
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A numerator of 651 and denominator of 7 on the right side is the same as 651 divided by 7 which is 93. Now we end up with this untrue equation:
(-93) = (93)
-93 is NOT equal to 93, thus we have proven that negative 93 times negative 7 is not equal to -651. The answer must therefore be 651:
-93 x -7 = 651
The above applies to all math problems where you multiply two negative numbers. Multiplying two negative numbers such as negative 93 times negative 7 will always have a positive answer.
Negative Times Negative Calculator
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