Помагите решить! номера 1123, 1124

1124.2/7:3/7= 2/7*7/3 = 2/34_1/2 - 3_5/6 =9/2 - 23/6 = 27/6 - 23/6 = 4/6 = 2/32/3*3_1/3 = 2/3*10/3 = 20/92/3+20/9 = 6/9+20/9 = 26/96_1/2:9 = 13/2*1/9 = 13/1826/9 : 13/18 = 26/9*18/13 = [latex] frac{26*18}{9*13} =4[/latex]