Abag contains 6 red marbles, 6 white marbles, and 4 blue marbles. find p (red or blue)
a.) 2/3
b.) 5/8
c.) none are correct
d.) 3/4

The answer is B.

If there are 6 red marbles, 6 white marbles, and 4 blue marbles, then there are 16 marbles total. To find the probability (P) of either the red or blue marbles, you will add together the number of red and blue marbles, and divide that by the total:

(6 + 4) / (6 + 6 + 4)
10/14

This fraction can further reduce to 5/8 (by dividing both the numbers by 2). 

X=-4  is the answer i think