1. 1) 4 5/16 = 69/16

2) 1 1/4 = 5/4

3) 69/16 + 5/4 = 69/16 + 20/16 = 89/16

4) 3 1/8 = 25/8

5) 25/8 - 89/15 = 50/16 - 89/16 = - 39/16.

2. 1) - 4 1/15 = - 61/15

2) 5 2/3 = 17/3

3) - 61/15 - 17/3 = - 61/15 - 85/15 = - 146/15

4) - 7 3/5= - 38/5

5) - 38/5 - ( - 146/15) = - 38/5 + 146/15= 146/15 - 38/5 = 146/15 - 114/15 = 32/15= 2 2/15.

3. 1) 5 3/4= 23/5

2) 2 7/20 = 47/20

3) 23/5 + 47/20= 115/20 + 47/20= 162/20= 81/10

4) - 3 1/2= - 7/2

5) - 7/2 - 81/10= - 35/10 - 81/10= - 116/10= - 10 16/10= - 10 8/5.

4. 1) - 3 7/18 = - 61/18

2) 5 8/9 =43/9

3) - 61/18 - 43/9 = - 61/18 - 86/18= - 147/18= - 49/6

4) - 1/3 - ( - 49/6) = - 1/3 + 49/6= 49/6 - 1/3= 49/6 - 2/6= 47/6= 7 5/6