(1) 4/8-2/16+3/14....(2) 5/9+3/3-2/27....(3) 2/10-4/30-2/27...

1. 4/8 - 2/16 + 3/14 = 112/224 - 28/224 + 48/224 = 132/224 = 33/56

2. 5/9 + 3/3 - 2/27 = 15/27 + 27/27 - 2/27 = 40/27 = 1 13/27

3. 2/10 - 4/30 - 2/27 = 54/270 - 36/270 - 20/270 = -2/270 = -1/135

semoga membantu ^^