Every student in my school is in either French class or Spanish class, or both. Let x be the number of students in French class, y be the number of students in Spanish class, z and be the number of students who are in both classes. Find an expression in terms of x,y,z and for how many students there are in my school.
+981 You can draw a venn diagram for this.
Since there are x Spanish students and y French students, there are x + y total students.
But since there are repeats that we counted twice, we subtract the repeating numbers so we only count it once.
\(x + y - z \) is your final answer.
i hope this helped,
Gavin.
