80-9•7+5= 40-5•8+19= 9•4+9•6-71= (42+18):6=

Question

80-9•7+5=
40-5•8+19=
9•4+9•6-71=
(42+18):6=

Answer 1

80-9*7+5=80-63+5=17+5=22
40-5•8+19=40-40+19=19
9•4+9•6-71=9*(4+6)-71=9*10-71=90-71=19
(42+18):6= 42:6+18:6=7+3=10