你好 [ 4-(4又3/5-3又1/3)]÷15/4=[ 4-(1+3/5-1/3)]÷15/4=[3-3/5+1/3)]÷15/4=[2又2/5+1/3)]÷15/4=2又11/15÷15/4=41/15×4/15=164/225 【数学辅导团】为您解答,不理解请追问,理解请及时选为满意回答!(*^__^*)谢谢!