помогиие пожалуйста номера 416 ,417 419.

2\3х = 48
х = 48*3\2 = 72
3\4х = 84
х = 84*4\3 = 112
3\5х = 60
х = 60*5\3 = 100
4\6х = 72
х = 72*6\4 = 108
5\8х = 160
х = 160*8\5=  256
3\10х = 990
х = 990*10\3 = 3300
7\12х = 84
х = 84*12\7 = 144
1.2х = 38
х = 38*2\1 = 76

75 = 3\5х
х = 75*5\3 = 125

1\3х = 75
х = 75:1\3 = 75*3\1 = 225
1\8х = 75
х = 75*8\1 = 600
1\4х = 75
х = 75*4\1 = 300
1\10х = 75
х = 750
1\5х = 75
х = 75*5\1 = 375
1\12х = 75
х = 75*12\1 = 900
1\6х = 75
х = 75*6\1 = 450
1\15Х = 75
Х = 75*15\1 = 1125