原式=29+1/3+39+1/4+49+1/5+59+1/6 =(29+39+49+59)+(1/3+1/4+1/5+1/6) =176+(60/180+45/180+31/180+30/180) =176+8/9 =176 8/9
137又9/10
39.05
39 1/20