ta có: aaa : 37.y = a
=> 111.a.1/37.y = a
=> 111.1/37.a.y = a
111/37.a.y = a
111/37.y = a:a
111/37.y = 1
y = 1 : 111/37
y = 37/111
aaa : 37 x y = a
a . 111 . \(\frac{1}{37}\). y = a
111 . 1/37 . y = a : a
111 . 1/37 . y = 1
y = 1 : 111 : 1/37
y = 1/3
ta có: aaa : 37.y = a
=> 111.a.1/37.y = a
=> 111.1/37.a.y = a
111/37.a.y = a
111/37.y = a:a
111/37.y = 1
y = 1 : 111/37
y = 37/111
\(aaa:37\cdot y=a\)
\(111a\cdot y:37=a\)
\(3a\cdot y=a\)
\(y=\frac{1}{3}\)