1)(18+25)/30= 43/30
2)(54+44)/99= 98/99
3) (55+24)/66= 79/66
4)(7+3)/18= 10/18
5)(45+52)/65= 97/65
6)(20+21)/28= 41/28
7)(2+5)/15= 7/15
8)(10+12)/16= 22/16
