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第1个回答 2016-04-14
0.8x0.25+0.8
=0.8x(0.25+1)
=0.8x1.25
=1
=0.8x(0.25+1)
=0.8x1.25
=1
第2个回答 2016-04-14
0.8x0.25+0.8
=0.8*(0.25+1)
=0.8*1.25
=1
=0.8*(0.25+1)
=0.8*1.25
=1
第3个回答 2016-04-14
=0.8x(0.25+1)
=0.8x1.25
=1
=0.8x1.25
=1
第4个回答 2016-04-14
2x(0.4x0.25)+0.8