1.) 2 ⅛ + 1 ⅙

= 17/8 + 7/6

= (51+28)/24

= 79/24 or 3 7/24

2.) ⅘ - ⅔

= (12-10)/15

= 2/15

3.) 7 ⅗ - 1 ¼

= 7 - 1 (3×4)-(5×1)/(5×4)

= 6 7/20

4.) 4 - ¼

= 3 4/4 - 1/4

= 3 ¾

5.) 4 ⅔ - 1 ⅘

= 14/3 - 9/5

= (70-27)/15

= 43/15

= 2 13/15