A.6x+18=7x-24与
| ||||
B.7x-24=6x+18与
| ||||
C.
| ||||
D.以上都不对 |
y-18 |
6 |
y+24 |
7 |
y+24 |
7 |
y-18 |
6 |
A.6x+18=7x-24与
| ||||
B.7x-24=6x+18与
| ||||
C.
| ||||
D.以上都不对 |
2 |
3 |
A.8天 | B.7天 | C.6天 | D.5天 |
2 |
3 |
A.8天 | B.7天 | C.6天 | D.5天 |
A.(100-80)x=400 | B.100x=400+80x | ||||
C.
| D.100x+400=80x |
A.(100-80)x=400 | B.100x=400+80x | ||||
C.
| D.100x+400=80x |
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