张小花猫
幼苗
共回答了19个问题采纳率:89.5% 举报
=8.2+1.8*0.4-1.5*0.6
=8.2+1.8*0.4-1.5*(0.4+0.2)
=8.2+1.8*0.4-1.5*0.4-1.5*0.2
=8.2+(1.8-1.5)*0.4-1.5*0.2
=8.2+0.3*0.4-1.5*0.2
=8.2+0.3*2*0.2-1.5*0.2
=8.2+0.6*0.2-1.5*0.2
=8.2-(1.5-0.6)*0.2
=8.2-0.9*0.2
==8.2-0.18
=8.02
4又1/6-x=2又3/5
x=4又1/6+2又3/5
x=6又23/30
1年前
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