Question

After 3 new students joined a class, the class had 30 students. Write an equation in which you can find n, the number of students in the class before the 3 new students joined.

Answer 1

x+3=30

Explanation:

There are x number of students, then 3 students were added to the class. Now there are 30 students.

Answer 2

30-3=n

Explanation:

Hope this helps!