问题
解答题
|
答案
÷5 8
÷20 21 7 12
=
×5 8
×21 20
,12 7
=
;9 8
×(3 4
-17 18
)5 9
=
×(3 4
-17 18
),10 18
=
×3 4
,7 18
=
;7 24
4×[(
+5 6
)÷6]2 3
=4×[(
+5 6
)×4 6
],1 6
=4×[
×9 6
],1 6
=4×
,1 4
=1;
×3 7
+1 15
÷15 4 7
=
×3 7
+1 15
×4 7
,1 15
=(
+3 7
)×4 7
,1 15
=1×
,1 15
=
;1 15
(6-
×32)+1 8 3 4
=(6-4)+
,3 4
=2+
,3 4
=2
;3 4
÷4 5
-5 8
÷1 2
.5 8
=
×4 5
-8 5
×1 2
,8 5
=(
-4 5
)×1 2
,8 5
=(
-8 10
)×5 10
,8 5
=
×3 10
,8 5
=
.12 25