计算:(1)23-6×(-3)+2×(-4)-|-5|;(2)-12-[137+(-12)÷6]2×(?34)3

2025-02-23 07:04:07
推荐回答(1个)
回答1:

(1)23-6×(-3)+2×(-4)-|-5|
=23+18-8-5
=43-13
=30;

(2)-12-[1
3
7
+(-12)÷6]2×(?
3
4
)
3
=-1-[1
3
7
-2]2×(-
27
64
).
=-1-[-
4
7
]2×(-
27
64
).
═-1-
16
49
×(-
27
64
).
-1+
27
196

=
169
196