1 |
5 |
6 |
5 |
6 |
5 |
6 |
5 |
6 |
5 |
x=40;
②3.6-15%x=2.4,
3.6-15%x+15%x=2.4+15%x,
3.6-2.4=2.4+15%x-2.4,
1.2=15%x,
1.2÷15%=15%x÷15%,
x=8;
③
7 |
8 |
3 |
7 |
3 |
8 |
3 |
7 |
3 |
8 |
3 |
8 |
3 |
7 |
3 |
8 |
x=1
1 |
7 |
④30%x+4.5×
2 |
3 |
30%x+3-3=5.1-3,
30%x=2.1,
30%x÷30%=2.1÷30%,
x=7.
①x+
| ②3.6-15%x=2.4 | ||||||
③
| ④30%x+4.5×
|
1 |
5 |
6 |
5 |
6 |
5 |
6 |
5 |
6 |
5 |
7 |
8 |
3 |
7 |
3 |
8 |
3 |
7 |
3 |
8 |
3 |
8 |
3 |
7 |
3 |
8 |
1 |
7 |
2 |
3 |