11:30-11:00=30分鐘=
1 |
2 |
1 |
2 |
=
1 |
2 |
=
1 |
2 |
1 |
8 |
=4(小時(shí));
11:30-11:10=20分鐘=
1 |
3 |
4x-120=(4-120÷x-
1 |
3 |
1 |
6 |
4x-120=(4-
120 |
x |
1 |
3 |
7 |
6 |
4x-120=
11 |
18 |
61 |
18 |
61 |
18 |
61 |
18 |
61 |
18 |
x=29
31 |
61 |
29
31 |
61 |
2 |
61 |
答:兩地之間的距離是118
2 |
61 |
1 |
7 |
1 |
6 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
8 |
1 |
3 |
1 |
3 |
1 |
6 |
120 |
x |
1 |
3 |
7 |
6 |
11 |
18 |
61 |
18 |
61 |
18 |
61 |
18 |
61 |
18 |
31 |
61 |
31 |
61 |
2 |
61 |
2 |
61 |