-1/3 x -12/13 = + 4/13
-13/12 is a rational number
-90
35 over 104
13 + -12 - 5 = -4 13 + -12 = 1 - 5 = -4
-12 -13 = -25
26
13 can go into 51 three times, with 12 left over.
negative 104
4/25 x 3/13 = 12/325
24/26 = 12/13
12/7 × 5/6 = 10/7 or 13/7
negative 3 times