105/(-20+15)
-------------------
45/(-9)+12
Plz help me to solve this question. Thanks!
Just work it step by step:
105/(-20+15)
-------------------
45/(-9)+12
105/(-5)
------------
-5+12
-21
---------
7
-3
Thank you very much for your time and help!
a 4 digit whole number is added to a 2 digit whole number. there is a largest possible sum and a smallest possible sum. what is the difference between those two sums?
To solve this expression, we need to simplify both the numerator and the denominator separately, and then divide them.
Let's start with the numerator:
105 / (-20 + 15)
First, evaluate -20 + 15, which gives us -5:
105 / (-5)
Now, let's simplify the denominator:
45 / (-9) + 12
Since dividing by a negative number flips the sign, we can rewrite this as:
45 / 9 + 12
Dividing 45 by 9 gives us 5:
5 + 12
Next, add 5 and 12:
5 + 12 = 17
Now we have our numerator and denominator simplified:
Numerator: 105 / (-5)
Denominator: 17
Finally, divide the numerator by the denominator:
105 / (-5) / 17
To divide fractions, you multiply the first fraction by the reciprocal of the second fraction. So we can rewrite this as:
105 / (-5) * (1 / 17)
Now, let's simplify the numerator:
105 / (-5) = -21
Now rewrite the expression:
-21 * (1 / 17)
To multiply fractions, you multiply the numerators together and the denominators together. So we have:
-21 * 1 = -21
17
Therefore, the final answer is:
-21 / 17