11.1*4/9*3/7.4*271又1/6*6/7+61又1/5*5/6+51又1/4*4/5

熱心網友

71又1/6*6/7+61又1/5*5/6+51又1/4*4/5=71*6/7+1/6*6/7+61*5/6+1/5*5/6+51*4/5+1/4*4/5=71*6/7+1/7+61*5/6+1/6+51*4/5+1/5=(70+1)*6/7+(60+1)*5/6+(50+1)*4/5+1/7+1/6+1/5=60+6/7+50+5/6+40+4/5+1/7+1/6+1/5=153