60-12-18-2-8=20
=48-18-2-8
=30-2-8
=28-8
=20
So, 20 students don't take either of these subjects.
Dividing by a half is the same as multiplying by two. 3/4 multiplied by 2 is

or, in improper fraction form

or, in decimal form, 1.5
x = 40/2 = 20 i think thsts the answer if I was wrong you have to right to slap my face
A is the answer of not I’m sorry for that