Question

х 3х =20 надо уровнение

Answer 1

х3х=20 
5х=20
х=20/5
х=4

Answer 2

х3х=20

Answer 3

2х*3

Answer 4

5х

Answer 5

20/5

Answer 6

х=4

Answer 7

Х+3х=20
4х=20
х=5
т.k 20:4