3 1\3 -(4 1\5х+х): 5 4\7 = 8\15

Правильно:3

(4 1/5х+х):5 4/7= 3 1/3-8/15(4 1/5х+х):5 4/7= 2 12/154 1/5х+х= 2 12/15*5 4/74 1/5х+х= 15 3/55 1/5х= 15 3/5х= 15 3/5 : 5 1/5х=78/5 : 26/5х=78/5 * 5/26х= 3Ответ:3