1. 12 7/8 - 6 1/12 2.7 2/7 - 3 2/3 3. 6 5/18 - 2 7/12 4. 14 3/5 - 7 3/4

1. 12 7/8 - 6 1/12
= 96/8 - 73/12
= 288/24 - 146/24
= 142/24
= 5 22/24
= 5 11/12

2. 7 2/7 - 3 2/3
= 51/7 - 11/3
= 253/21 - 77/21
= 176/21
= 8 8/21

3. 6 5/18 - 2 7/12
= 113/18 - 31/12
= 226/36 - 93/36
= 133/36
= 3 25/36

4. 14 3/5 - 7 3/4
= 73/5 - 31/4
= 292/20 - 155/20
= 137/20
= 6 17/20

1. 12 7/8 - 6 1/12

103/8 - 73/12

103×12/8×12 - 73×8/12×8

1.236/96 - 584/96

652÷4/96÷4

163/24 atau 6 19/24


2. 7 2/7 - 3 2/3

51/7 - 11/3

51×3/7×3 - 11×7/3×7

153/21 - 77/21

76/21 atau 3 13/21


3. 6 5/18 - 2 7/12

113/18 - 31/12

113×12/18×12 - 31×18/12×18

1.356/216 - 558/216

798÷6/216÷6

133/36 atau 3 25/36


4. 14 3/5 - 7 3/4

73/5 - 31/4

73×4/5×4 - 31×5/4×5

292/20 - 155/20

137/20 atau 6 17/20