问题
解答题
计算(能简算的要简算)
3-
(
[
|
答案
(1)
÷4+5 12
×7 12
,1 4
=
×5 12
+1 4
×7 12
,1 4
=(
+5 12
)×7 12
,1 4
=
;1 4
(2)3-
×49 15
÷15 7
,14 5
=3-7÷
,14 5
=3-
,5 2
=
;1 2
(3)(
+5 24
)×48,7 11
=
×48+5 24
×48,7 11
=10+30
,6 11
=40
;6 11
(4)
÷(27 6
×18 5
),15 34
=
÷27 6
,27 17
=
;17 6
(5)[
+7÷(3 5
-11 12
)]×5 8
,5 24
=[
+7÷3 5
]×7 24
,5 24
=[
+24]×3 5
,5 24
=24
×3 5
,5 24
=5
.3 24