Решите уравнение: х/16=3/8; 108/90=42/b

Question

Решите уравнение:
х/16=3/8; 108/90=42/b

Answer 1

Х:16=3:8
х:16=0,375
х=0,375*16
х=6

108:90=42:b
1,2=42:b
b=42:1,2
b=35

Answer 2

Х/16=3/8
х=3*16/8
х=6

108/90=42/б
б=42*90/108
б=35

Comments

1. 6:х=36:30
6:х=1.2
х=6:1.2
х=5
2. 12:7=3:х
1,71428571=3:х
х=1,75
3. 4,9:0,35=х:35
14=х:35
х=14*35
х=490
4. х/21=9/14
14*х=189
х=13,5
5. х/16=3/8
8*х=48
х=6
6.108/90=42/д
108*д=3780
д=3780:108
д=35