(1)30÷ 5 6 =36答:这个数是36.(2)(15×60%-4)÷ 4 5 =5÷ 4 5 = 25 4 答:这个数是 25 4 .(3)( 7 15 ÷ 1 3 )+( 9 14 - 5 14 )= 7 5 + 2 7 = 59 35 答:和是 59 35 .