31 times 14 is 434, but what is the answer if both 31 and 14 are negative numbers? Here we will determine if the answer to negative 31 times negative 14 is positive 434 or negative 434.
There are many different ways to explain and determine if the answer to negative 31 times negative 14 is -434 or +434 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 -434 is the correct answer using basic algebra.
We will test if -434 is correct by setting up the equation negative 31 times negative 14 equals negative 434, and then simplifying the equation to see if it is true.
(-31) (-14) = (-434)
Divide both sides of the equation by (-14) :
|
| = |
|
The numerator and denominator on the left side both have (-14) which even each other out and can be removed:
| (-31) = |
|
The numerator and denominator on the right side both have a minus sign (-) which even each other out and can be removed:
| (-31) = |
|
A numerator of 434 and denominator of 14 on the right side is the same as 434 divided by 14 which is 31. Now we end up with this untrue equation:
(-31) = (31)
-31 is NOT equal to 31, thus we have proven that negative 31 times negative 14 is not equal to -434. The answer must therefore be 434:
-31 x -14 = 434
The above applies to all math problems where you multiply two negative numbers. Multiplying two negative numbers such as negative 31 times negative 14 will always have a positive answer.
Negative Times Negative Calculator
Here you can multiply another two negative numbers together.
What is negative 31 times negative 15?
Here is the next problem on our list that we have explained and calculated.
Copyright | Privacy Policy | Disclaimer | Contact