Answer:
14 students
Step-by-step explanation:
Given
Let:
read a book
watched TV
So, we have:
-- total



Required
Students that did both (x)
This is calculated using:

So, we have:

This gives:

Open brackets


Collect like terms


<em>Hence, 14 students did both</em>
Answer: -1 would be -d
0 -> d
1 -> f
2 -> stays same
(if this is not the right answer I'm sorry because i learned this awhile ago
Answer:
76
Step-by-step explanation: