设原价为x, ( 1-7/20)x=650
（13/20）x=650
x=1000元原来每台1000元
一种微波炉现在每台售价650元.比原来降低了7/20,
一种微波炉现在每台售价650元.比原来降低了7/20,
,原来每台多少钱
,原来每台多少钱
数学人气：751 ℃时间：2019-10-19 03:05:46
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