(40:4/5-50)17/19+19/17=((40/4)5-50)17/19+19/17=(105-50)17/19+19/17=(50-50)17/19 +19/17=0 * 17/19 +19/17=0 + 1.1176=1.1176
(40:4/5-50)17/19+19/17=
((40/4)5-50)17/19+19/17=
(105-50)17/19+19/17=
(50-50)17/19 +19/17=
0 * 17/19 +19/17=
0 + 1.1176=
1.1176