如题所述
143x49å143x52ä¸143
=143xï¼49å52ä¸1)
=143x100
=14300
=143xï¼49å52ä¸1)
=143x100
=14300
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第1个回答 2015-04-27
143x52-125x143+43x77
= 143x(52-125)+43x77
= -143x73+43x77
= -100 x 73 - 43x 73 + 43x77
= -100 x 73 + 43x ( 77-73 )
= -7300 + 172
= -7 128
= 143x(52-125)+43x77
= -143x73+43x77
= -100 x 73 - 43x 73 + 43x77
= -100 x 73 + 43x ( 77-73 )
= -7300 + 172
= -7 128
