如题所述
åå¼
=0.36*ï¼2.8+7.2ï¼
=3.6
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第1个回答 2016-09-25
0.36*2.8+3.6*0.72
=3.6x0.28+3.6*0.72
=3.6x(0.28+0.72)
=3.6x1
=3.6
=3.6x0.28+3.6*0.72
=3.6x(0.28+0.72)
=3.6x1
=3.6