Thực hiện phép tính
Giải thích
a) 34:(−75.−32)
=34:(−7).(−3)5.2=34:2110
=34.1021=3.104.21=3084
=30:684:6=514
b) −19.35+−19.−45−19.0,4
=19.−35+19.45−19.25
=19.(−35+45−25)
=19.(−3)+4−25
=19.−15=1.(−1)9.5=−145
a) 34:(−75.−32)
=34:(−7).(−3)5.2=34:2110
=34.1021=3.104.21=3084
=30:684:6=514
b) −19.35+−19.−45−19.0,4
=19.−35+19.45−19.25
=19.(−35+45−25)
=19.(−3)+4−25
=19.−15=1.(−1)9.5=−145