计算:(要求写出主要计算过程)(1)[2÷(5.4-314)×143]÷389(2)[(10.75-41112)×2711]÷[(1.125+112)÷(2.25÷101011)].-数学
7 |
3 |
9 |
35 |
=(2×
20 |
43 |
7 |
3 |
9 |
35 |
=
40 |
43 |
3 |
5 |
=
24 |
43 |
(2)[(10.75-4
11 |
12 |
7 |
11 |
1 |
12 |
10 |
11 |
=[(10
9 |
12 |
11 |
12 |
29 |
11 |
9 |
8 |
1 |
12 |
9 |
4 |
120 |
11 |
=[
35 |
6 |
29 |
11 |
29 |
24 |
480 |
99 |
=
35 |
6 |