Answer:
(a+b) - (ab)
Step-by-step explanation:
sum of two numbers a and b decreased by their product
(a+b) - (ab)
If you are meaning Nine times Nine the answer is 81.
All you need to do for this is 155-75 which would be 80 :) hope this helps
If there are 27 students in the class and they have to form as many groups of 4 as possible, you can calculate this using the following step:
27 / 4 = 6.75 = 6 3/4
Result: 27 students can form 6 groups of 4 students and 3 students have to form their own group.
1, 3, and 5 because you can multiply all these numbers to get 15
