Please help me with this math problem. I don't know if I am doing this correctly.
-21 - (-9)
__________
-21 - (-21)
Am I correct in answering this problem correctly? -12
____ = -12
0
If not can you help me with the right answer? Thanks kindly
you have it almost correct, but division by zero is not allowed, so your final answer is indeterminate. -12/0 is not allowed in math.
Hi Bob,
Thanks for the prompt response. I am still a little confused. Did I show my work correctly because that is what my teacher is concerned with? Also, can you tell me what is undeterminate? Is undeterminate the answer that my teacher is looking for? Thanks so much.
indeterminate means cannot be computed.
I have no idea what your teacher is looking for, I cannot fathom why the question was given to you. Division by zero is just NOT allowed, ever.
Your work is fine, except for the last equals sign.
-12/0 is NOT =-12
so to be sure that I am absolutely sure that I understand what you are saying bob is my final is -12. If so is this how it is suppose to look
-12 - (-9)
__________ = -12
-21 - (-21)
Again, so is the the way it's suppose to look? Thank you so much for all your help Bob.
To correctly solve this math problem, you need to follow a specific order of operations called BEDMAS or PEMDAS.
In this case, the problem is a subtraction involving negative numbers.
First, let's simplify the numerator: -21 - (-9). To solve this, we can rewrite it as -21 + 9, which equals -12.
Next, we simplify the denominator: -21 - (-21). This can be rewritten as -21 + 21, which equals 0.
Finally, divide the numerator by the denominator: -12 รท 0.
However, dividing by zero is undefined in mathematics. Therefore, we cannot assign a numerical value to this division. Instead, we say that the division is "undefined."
So, in summary, the answer to the math problem -21 - (-9) / (-21 - (-21)) is undefined, not -12.
Remember to be careful when dealing with division by zero, as it can lead to undefined results.