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科目:初中数学 来源: 题型:
A、如果s=vt,那么v=
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| B、如果6x=2,那么x=3 | ||
| C、如果x-3=y-3,那么x=y | ||
| D、如果a=b,那么a±b=b±a |
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| A、-6-3+7-2=-4 |
| B、6-3-7-2=-6 |
| C、6-3+7-2=8 |
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| B、y1<y2 |
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