问题
解答题
计算下列各题.
|
答案
(1)
-2 3
÷1 2
×3 4 4 5
=
-2 3
×1 2
×4 3 4 5
=
-2 3 8 15
=
;2 15
(2)(
-2 3
)÷1 2
×3 4 4 5
=
×1 6
×4 3 4 5
=
;8 45
(3)(
-2 3
)÷(1 2
×3 4
)4 5
=
×1 6 5 3
=
;5 18
(4))(
-2 3
÷1 2
)×3 4 4 5
=(
-2 3
)×2 3 4 5
=0.