A.(100-80)x=400 | B.100x=400+80x | ||||
C.
| D.100x+400=80x |
x |
4 |
x |
5 |
1 |
3 |
1 |
3 |
A.7x=6.5x+5 | B.7x-5=6.5 | C.(7-6.5)x=5 | D.6.5x=7x-5 |
A.7x=6.5x+5 | B.7x-5=6.5 | C.(7-6.5)x=5 | D.6.5x=7x-5 |
A.从甲组调12人去乙组 |
B.从乙组调4人去甲组 |
C.从乙组调12人去甲组 |
D.从甲组调12人去乙组,或从乙组调4人去甲组 |
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