13.75*5/8-2.75*5/8-5/8

题目

13.75*5/8-2.75*5/8-5/8
24*51/43+51*19/43
(1/13*1/18)*(13*18)
13.76-(7/12+1.76+1又5/12)
35.2除9+35.2除9/8
6*1/4+13除4-18*0.15

答案

13.75*5/8-2.75*5/8-5/8=(13.75-2.75-1)*5/8=25/4=6.2524*51/43+51*19/43=(24+19)*(51/43)=51(1/13*1/18)*(13*18)=113.76-(7/12+1.76+1又5/12)=13.76-1.76-(7/12+5/12)=12-2=10