问题
解答题
|
答案
(1)(
+2 3
-1 4
)÷5 12
,1 36
=(
+2 3
-1 4
)×365 12
=
×36+2 3
×36-1 4
×36,5 12
=24+9-15,
=18;
(2)5.5×36+55×6.4,
=5.5×36+5.5×64,
=(36+64)×5.5,
=100×5.5,
=550;
(3)[
-(7 8
+1 4
)]÷1 2
,1 5
=[
-7 8
]÷6 8
,1 5
=
×5,1 8
=
;5 8
(4)(
-3 5
)÷1 3
×2 3
,7 8
=
×4 15
×3 2
,7 8
=
.7 20