31 52 1 3 1 + 3 1
--- + ---- = 3 --- + 7 --- = 10-------- = 10------
9 7 9 7 9 + 7 10
43 72 10 2 10 + 2 2
- ----- + ---- = -3 ----- + 7 ---- = 4 ----------- = 4 ----
11 10 11 10 11 + 10 11
82 93 5 3 5 + 3 3
- ----- × ----- = - 11 --- × 18 ----- = 7 --------- = 7 ----
7 5 7 5 7 + 5 7