Answer:
51
Step-by-step explanation:
12+39=51
1/3 = 0.333333
16/33 = 0.48484848
2/11 = 0.181818
1/12 = 0.0833333
127/999 = 0.127127127
divde each fraction
-5+-15= -20
4+15= 19
-20+19
-1