下列运算正确的是( )
A.4m﹣m=3 | B.6×107=6000000 |
C.![]() | D.yx﹣2xy=﹣xy |
更新时间:2020-03-11 21:25:13
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A.4m﹣m=3 | B.6×107=6000000 |
C.![]() | D.yx﹣2xy=﹣xy |