能简算的要简算.35+710+2578-(38+25)2-1519-41978+16-112458+917+38+817137-512-7123-(1759+23-151845-(715-49)611+1115+511-615.-数学
=(
5 |
8 |
3 |
8 |
9 |
17 |
8 |
17 |
=1+1,
=2;
(6)1
3 |
7 |
5 |
12 |
7 |
12 |
=1
3 |
7 |
5 |
12 |
7 |
12 |
=1
3 |
7 |
=
3 |
7 |
(7)3-(
1 |
7 |
=3-
1 |
56 |
=2
55 |
56 |
(8)
5 |
9 |
2 |
3 |
15 |
18 |
=
11 |
9 |
15 |
18 |
=
7 |
18 |
(9)
4 |
5 |
7 |
15 |
4 |
9 |
=
4 |
5 |
7 |
15 |
4 |
9 |
=
1 |
3 |
4 |
9 |
=
7 |
9 |
(10)
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