问题
解答题
计算. (
(
|
答案
(1)(
-3 8
)×481 6
=
×48-3 8
×481 6
=18-8
=10;
(2)
×34×2 17 2 17
=4×2 17
=
;8 17
(3)(
+5 4
)×5 12 2 15
=
×5 4
+2 15
×5 12 2 15
=
+1 6 1 18
=
;2 9
(4)
-3 4
÷123 10
=
-3 4
×3 10 1 12
=
-3 4 1 40
=
.29 40