Question

2x/36=5/6 7/21=3x/54 8/5=4x/15 решите уравнение

Answer 1

2х:36=5:6
2х*6=36*5
12х=180
х=180:12
х=15

7:21=3х:54
3х*21=7*54
63х=378
х=378:63
х=6

8:5=4х:15
4х*5=8*15
20х=120
х=120:20
х=6