摘要: 下列变形正确的是( ) A. 4x – 5 = 3x+2变形得4x–3x = –2+5 B. x – 1 = x+3变形得4x–6 = 3x+18 C. 3 变形得3x–1 = 2x+6 D. 3x = 2变形得x =
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下列变形正确的是( )
| A、由7x=4x-3移项,得7x-4x=3 | ||||
B、由
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| C、由2(2x-1)-3(x-3)=1去括号,得4x-2-3x-9=1 | ||||
D、由
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