(1/2 - 1/3 * 1/4 + 1/5) / (1/6)
first do 1/3 * 1/4
(1/2 - 1/12 + 1/5) / (1/6)
need LCM of 2, 12, and 5. . . that's 60
want the bottoms of 1/2, 1/12, and 1/5 all converted to /60
(30/60 - 5/60 + 12/60) / (1/6)
(37/60) / (1/6)
(37/60) * (6/1)
a 6 cancels out of the 60 and the 6
(37/10) * (1/1)
37/10