解方程 3(2X-Y)+4(X-2Y)=87 2(3X-Y)-3(X-Y)=82 1-0.3(Y-2)=(X+1)/5 (Y-3)/4=(4X+9)/20-15 X+Y=3(2X-Y)+4(X-2Y)=87 2(3X-Y)-3(X-Y)=82 1-0.3(Y-2)=(X+1)/5 (Y-3)/4=(4X+9)/20-15 X+Y= 28000.96X+0.64Y=2800*0.92

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/20 17:03:00
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