细心计算每一步19+36-1356-13+1478+14-1356-(56-112)13+37+23+4738-29+58-79.-数学
(2)
5 |
6 |
1 |
3 |
1 |
4 |
=
1 |
2 |
1 |
4 |
=
3 |
4 |
(3)
7 |
8 |
1 |
4 |
1 |
3 |
=
9 |
8 |
1 |
3 |
=
27 |
24 |
8 |
24 |
=
19 |
24 |
(4)
5 |
6 |
5 |
6 |
1 |
12 |
=
5 |
6 |
5 |
6 |
1 |
12 |
=0+
1 |
12 |
=
1 |
12 |
(5)
1 |
3 |
3 |
7 |
2 |
3 |
4 |
7 |
=(
1 |
3 |
2 |
3 |
3 |
7 |
4 |
7 |
=1+1,
=2;
(6)
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