liuyanying
幼苗
共回答了20个问题采纳率:100% 举报
(1+0.43+0.29)*(0.43+0.29+0.87)-(1+0.43+0.29+0.87)*(0.43+0.29)
=(1+0.43+0.29)*(0.43+0.29)+(1+0.43+0.29)*(0.87)-(1+0.43+0.29+0.87)*(0.43+0.29) 造同类项(0.43+0.29)
=【(1+0.43+0.29)-(1+0.43+0.29+0.87)】*(0.43+0.29)+(1+0.43+0.29)*(0.87) 合并同类项
=-0.87*(0.43+0.29)+(1+0.43+0.29)*(0.87)
=0.87*[-(0.43+0.29)+(1+0.43+0.29)] 合并同类项
=0.87
1年前
6