Question

решите 54 пжжжжжжжжжж

Answer 1

7/8=х/6

8 * х = 7 * 6

8х=42

Х=42:8=42/8=21/4=5 1/4

13/15=Х/10

15 * х = 13 * 10

15х=130

Х=130:15=26:3=26/3= 8 2/3

12/21=х/14

12*2/21*2=х*3/14*3

24/42=3х/42

3х=42

Х = 42:3=14

48/51=х/34

51*х=48*34

Х=48*34/51=48*2/3=16*2= 34.