问题 解答题
计算:
(1)
24
×
6

(2)
2
×
6
3
-1

(3)
27x
-
12x
+
45x
-
20x

(4)(2
12
-3
1
3
6

(5)(3
12
-4
3
+
48
)÷2
3
答案

(1)原式=2

6
×
6

=12;

(2)原式=

2
3
3
-1

=2-1

=1;

(3)原式=3

3x
-2
3x
+3
5x
-2
5x

=

3x
+
5x

(4)原式=(4

3
-
3
)×
6

=3

3
×
3
×
2

=9

2

(5)原式=(6

3
-4
3
+4
3
)÷2
3

=6

3
÷2
3

=3.

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