You multiply straight across, and one number is a fraction and the other is not.
Just do 240 times 1/8 which is the same thing as 240/8, which is 30
16 = 48/3
48 divided by 2 = 24
There is 24 students in the club.
So basically you are going to line up your equations (already done). Next, you will just add each term. So x + 3x = 4x, then 2y - 2y = 0 (we wouldn't put anything) then 7 - 3 = 4
So then we have all of our terms figured out and will have 4x = 4 then divide 4x by 4 to get x alone and then you will also divide the four that is by itself by four to equal one. So, your answer is x = 1. I hope that helps!