Question

Решите уравнения:
1) 25/27 x = 5/18
2) 13/17 x = 39
3) 4x = 5/7
4) x : 2 2/15 = 1 9/16
5) 4 4/9 : x = 5/27
6) 1 4/9 x = 5,2