11/12 of 7 is simply their product.

Answer:
219
Step-by-step explanation:
83 + 119 = 202
202 + 17 = 219
-2(3z+8)=1/3(9-18z)
-6z-16=1/3(9-18z)
-6z-16=1/3(-18z+9)
-6z-16=1(-18z+9)
———-
3
0=57
The input has no solution
The cardinality of the union between two sets is given by

In fact, if an element is in both A and B, it is counted in both N(A) and N(B), so we're counting it twice. By subtracting the cardinality of the interserction, we're taking back one of these "extra-counted" element, and the count is correct. In your case, the numbers are

This means that the two sets cover, without repetitions, 43 of the 66 elements in the sets. So, there are

elements which are in neither A nor B
5/8 of the cast doesn't sing. To get this answer, you must do 8/8 - 3/8. This would give you 5/8 because 8-3 equals 5 and the denominators just satay the same.