Question

Уравнение 2/5 : х=9:3,6

Answer 1

25:х=9:3610
25:х=9:185
25:х=1*52
25*1х=52
2*25=5*х
45=5х
5х=45
х=45:5
х=4*15*5
х=45*5
х=425
х=0.16