问题
解答题
48×
(
|
答案
÷15×5 9 18 5
=
×5 9
×1 15
,18 5
=
;2 15
48×
+3÷73 7
=48×
+3 7
,3 7
=(48+1)×
,3 7
=49×
,3 7
=21;
÷(7 18
-2 3
)×2 5 4 15
=
×7 18
×15 4
,4 15
=
;7 18
(
×3 10
+5 6
)÷3 10 9 4
=(
+1 4
)×3 10 4 9
=
×1 4
+4 9
×3 10
,4 9
=
+1 9
,2 15
=
;11 45
×[3 10
÷(7 8
-3 5
)]1 4
=
×[3 10
×7 8
],20 7
=
×3 10
,5 2
=
.3 4