Answer: In my opinion you could just shorten the number of orders so that it's not so long.
Explanation: The numbers can be from every 20 orders so 900, 920, 940...so on.
Step-by-step explanation:
the answer is in the image above
in the like term you can add directly and make it single fraction and in unlike term you have to take LCM of denominator .
Combinations of 7 taken 4 at a time.
C (7,4) = 7! /[ 4!(3!)]
7 x 6 x 5 = 210
210 divided by 3 = 70
70 divided by 2 = 35
They are both in standard form.
