问题
解答题
|
答案
(1)
×7 15
,3 14
=
=
;1 10
(2)
×9 4
,11 5
=
,9×11 4×5
=
;99 20
(3)
×29 33
,44 87
=
;4 9
(4)9×
×2 9
,5 12
=2×
,5 12
=
;5 6
(5)
+1 6
×5 7
×14 25
×5 12
,14 15
=
+1 6
×2 5
×5 12
,14 15
=
+1 6
×1 6
,14 15
=
+1 6
,7 45
=
.29 90