计算:(1)(+34)?(54)?|?3|; &...

2025-02-22 23:31:48
推荐回答(1个)
回答1:

(1)原式=
3
4
-
5
4
-3=-
1
2
-3=-3
1
2

(2)原式=-8×
9
4
×
4
9
=-8;
(3)原式=(
2
9
-
1
4
-
5
18
)×36=8-9-10=-11;
(4)原式=-16-
1
2
×(5-9)=-16+2=-14;
(5)原式=98×(
1
8
+
1
8
-
5
4
)=-98.