Respuesta :
Answer:
First subtract the number of students who take both subjects from the number of students who take Consumer Education
22-4=18
Then,
subtract the number of students who take both subjects from the number of students who take French
20-4=16
Now,
Add 18,16 and 4 and subtract the sum from the total number of students in the class
=80-(18+16+4)
=80-38
=42
Step-by-step explanation: