Пошаговое объяснение:
1) х/48 = 5/6
6х = 48 * 5
6х = 240
х = 240 : 6
х = 40
2) 28/х = 4/9
4х = 28 * 9
4х = 252
х = 252 : 4
х = 63
3) 8/15 = 12/х
8х = 12 * 15
8х = 180
х = 180 : 8
х = 22,5
4) 9/20 = х/16
20х = 9 * 16
20х = 144
х = 144 : 20
х = 7,2
5) х/42 = 7/12
12х = 7 * 42
12х = 294
х = 294 : 12
х = 24,5
6) 9/16 = х/24
16х = 9 * 24
16х = 216
х = 216 : 16
х = 13,5
Пошаговое объяснение:
1) х/48 = 5/6
6х = 48 * 5
6х = 240
х = 240 : 6
х = 40
2) 28/х = 4/9
4х = 28 * 9
4х = 252
х = 252 : 4
х = 63
3) 8/15 = 12/х
8х = 12 * 15
8х = 180
х = 180 : 8
х = 22,5
4) 9/20 = х/16
20х = 9 * 16
20х = 144
х = 144 : 20
х = 7,2
5) х/42 = 7/12
12х = 7 * 42
12х = 294
х = 294 : 12
х = 24,5
6) 9/16 = х/24
16х = 9 * 24
16х = 216
х = 216 : 16
х = 13,5