18-150%x+150%x=750%+150%x,
18-750%=750%+150%x-750%,
10.5=150%x,
10.5÷150%=150%x÷150%,
x=7;
(2)
2 |
3 |
1 |
5 |
1 |
15 |
7 |
15 |
1 |
15 |
7 |
15 |
7 |
15 |
1 |
15 |
7 |
15 |
x=
1 |
7 |
(3)6×4-
1 |
2 |
64 |
5 |
24-
1 |
2 |
1 |
2 |
64 |
5 |
1 |
2 |
24-
64 |
5 |
64 |
5 |
1 |
2 |
64 |
5 |
11.2=
1 |
2 |
11.2÷
1 |
2 |
1 |
2 |
1 |
2 |
x=22.4.
解方程 18-150%x=750% |
| 6×4-
|
2 |
3 |
1 |
5 |
1 |
15 |
7 |
15 |
1 |
15 |
7 |
15 |
7 |
15 |
1 |
15 |
7 |
15 |
1 |
7 |
1 |
2 |
64 |
5 |
1 |
2 |
1 |
2 |
64 |
5 |
1 |
2 |
64 |
5 |
64 |
5 |
1 |
2 |
64 |
5 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |