( 55-5*y) : 4+14= 19
( 55-5*y) : 4=5
55-5*y =20
5*y=35
y=7
( 55 - 5 x y ) : 4 = 19 - 14
( 55 - 5 x y ) : 4 = 5
( 55 - 5 x y ) = 5 x 4
( 55 - 5 x y ) = 20
5 x y = 55 - 20
5 x y = 35
y = 35 : 5
y = 7
\(\left(55-5.y\right):4+14=19\)
\(\left(55-5.y\right):4=19-14\)
\(\left(55-5.y\right):4=5\)
\(55-5.y=5.4\)
\(55-5.y=20\)
\(5.y=55-20\)
\(5.y=35\)
\(y=35:5\)
\(y=7\)