It is: 7/12
No. (5/6) - (1/6) = 4/6 = 2/3
(6/12) - (1/3) = (6/12) - (4/12) = 2/12 = 1/6
1
13/15 − 4/6 = 18/90 which reduces to 1/5
1/4
7/8 - 6/8 = 1/8
1/3
3/4 minus 1/6 is 7/12
1/6
-1,-2,+2,-4,+4,-5,+5, +0. the sequence is subtract twice, add once, subtract again, add, then subtract, then add twice.
you add 3 and 4 then subtract 1