First convert the mixed number into improper fractions...
Rule: a b/c = (ac+b)/c
47/6+46/9
When adding/subtracting fraction you need a common denominator...
(47/6)(3/3)+(46/9)(2/2)
141/18+92/18
(141+92)/18
233/18 now convert back to a mixed number...
(216+17)/18
12 17/18