答案=6
3/5÷(3/4-2/3)×5/6= 3/5÷(9/12-8/12)×5/6= 3/5÷1/12×5/6= 3/5×12×5/6= 6
3/5/(3/4-2/3)*5/6=3/5/(9/12-8/12)*5/6=3/5/(1/12)*5/6=3/5*5/6*12=6