Решите пж4,1/7=20,5/y

Question

Решите пж
4,1/7=20,5/y

Answer 1

4,1y=20.5*7
y=143.5/7
y=35

Answer 2

41/70=205/10у
10у•41=70•205
У=(70•205)/(41•10)
У=35