THERE ARE 22 STUDENTS IN A CLASS. sINCE THE START OF SCHOOL, 2 STUDENTS HAVE JOINED THE CLASS AND 4 HAVE MOVED. hOW MANY STUDENTS WERE IN THE CLASS AT THE BEGGI

Question

NNED TO KNOW HOW TO FIGURE IT OUT

Answer 1

No worries, you can do this!

We don't know how many were there in the beginning, so that would be "X" for now.

Adding the 2 students who joined and losing the 4 who moved results in the current 22. In math symbols...

X + 2 - 4 = 22            You can combine like terms and get:

X       -2   = 22           Then isolate X by always doing the opposite of whatever the number with X is doing.

         +2      +2

X             = 24