问题
解答题
|
答案
(1)12÷(
×6 7
) 14 15
=12÷
,4 5
=12×
,5 4
=15;
(2)
÷(7 48
-7 12
) 1 8
=
÷7 48
,11 24
=
×7 48
,24 11
=
;7 22
(3)1
+3÷1 6 9 10
=
+7 6
,10 3
=
;9 2
(4)
×9 17
-6 7
÷78 17
=
-54 119
×8 17
,1 7
=
-54 119
,8 119
=
;46 119
(5)
÷5 6
×2 3 1 2
=
×5 6
×3 2
,1 2
=
;5 8
(6)
+2 3
×1 3 3 7
=
+2 3
,1 7
=
.17 21