问题
解答题
|
答案
(1)
×3 7
×1 13
,91 9
=
×3 91
,91 9
=
;1 3
(2)
×22×1 33
,3 4
=
×2 3
,3 4
=
;1 2
(3)10×
×7 15
,9 28
=10×(
×7 15
),9 28
=10×
,3 20
=
.3 2
|
(1)
×3 7
×1 13
,91 9
=
×3 91
,91 9
=
;1 3
(2)
×22×1 33
,3 4
=
×2 3
,3 4
=
;1 2
(3)10×
×7 15
,9 28
=10×(
×7 15
),9 28
=10×
,3 20
=
.3 2