有關2Q2y3的精選大全

設P=2y-2,Q=2y+3,有2P-Q=1,則y的值是(  )A.0.4                  ...
問題詳情:設P=2y-2,Q=2y+3,有2P-Q=1,則y的值是(  )A.0.4                         B.4                            C.-0.4                 ...
設P=2y-2,Q=2y+3,有2P-Q=1,則y的值是                       (   ...
問題詳情:設P=2y-2,Q=2y+3,有2P-Q=1,則y的值是                       (     )A.0.4             B.4            C.-0.4           D.-2.5【回答】B;知...
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