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