问题
解答题
|
答案
(1)
÷(7 6
-7 3
)7 9
=
÷7 6 14 9
=
×7 6 9 14
=
;3 4
(2)(
+2 3
)÷3 4 7 12
=
×17 12 12 7
=
;17 7
(3)
÷[3-(3-17 9
)]7 10
=
÷[3-3+17 9
]7 10
=
÷7 9 17 10
=
×7 9 10 17
=
;70 153
(4)
×9 8
-2 3
÷4 5 8 5
=
-3 4
×4 5 5 8
=
-3 4 1 2
=
;1 4
(5)
-7 8
×4 9 3 8
=
-7 8 1 6
=
;17 24
(6)
×5 8
×(4 5
+5 6
)1 3
=
×1 2 7 6
=
;7 12
(7)
÷4 9
+3 5
÷5 9 3 5
=(
+4 9
)÷5 9 3 5
=1÷3 5
=
;5 3
(8)
÷9 10
+3 4
×4 3 1 10
=
×9 10
+4 3
×4 3 1 10
=(
+9 10
)×1 10 4 3
=1×4 3
=
.4 3