0.75+3/4x5/11+75%x6/11 简便计算0.75+3/4x5/11+75%x6/11 简便计算急

0.75+3/4x5/11+75%x6/11 简便计算0.75+3/4x5/11+75%x6/11 简便计算急 帮我用lingo或者lindo算个题呗?x1+x4+x5+x6+x7>20x1+x2+x5+x6+x7>13x1+x2+x3+x6+x7>10x1+x2+x3+x4+x7>12x1+x2+x3+x4+x5+>16x2+x3+x4+x5+x6+>18x3+x4+x5+x6+x7>20格式不对也改下哈,>在lingo中应该和>=一样吧?min=(5x1+4x2+3x3+3x4+3x5+3x6+4x7) 数学建模的LINGO使用问题modelmin=x0+x11+x8+x9;x0+x1+x2+x3+x4+x5+x6+x7+x8+x9+x10+x11=11;x0+x1+x3+x4>=4;x1+x2+x4+x5>=4;x2+x3+x5+x6>=4;x3+x4+x6+x7>=3;x4+x5+x7+x8>=3;x5+x6+x8+x9>=4;x6+x7+x9+x10>=4;x7+x8+x10+x11>=2;x8+x9+x11+x0>=2;x9+x10+x0+x1>=1; 1/1x3+1/2x4+1/3x5+1/4x6+...+1/100x102=? 1/1x3+1/2x4+1/3x5+1/4x6+...+1/10x12 1x3+2x4+3x5+4x6..+99x101=? 1x2+2x3+3x4+4x5+5x6---+99x100=? 1x2+2x3+3x4+4x5+5x6+.+99x100 巧算：1x2+2x3+3x4+4x5+5x6+6x7...+8x9 计算(1+1／1x3)(1+1／2x4）（1+1／3x5）（1+/4x6）……(1+/11×13) 足彩4x1 4x4 4x5 4x6 x1-x2+x3=1x2-x3+x4=21若x1,x2,x3,x4,x5满足方程组 x3-x4+x5=3x4-x5+x1=4x5-x1+x2=5求x2 x3 x4的值2已知 x1+x4+x6+x7=39 x2+x4+x5+x7=49 x3+x5+x6+x7=41 x4+x7=13 x5+x7=14 x6+x7=9 x1+x2+x3+x4+x5+x6+x7=9求x7的值若x1,x2,x3,x4,x5满足方程组 x1-x 4/5x1/3+4/5、1/4x5-1/4,4/7+4/7x6,用简便方法计算 1x3＋2x4＋3x5＋4x6……＋100x102＝? 1x2+2x3+3x4+4x5+5x6+6x7+7x8+8x9+9x10+10x11 1/1x3+1/2x4+1/3x5+1/4x6+1/5x7+1/6x8 (2X2)/1X3+(4X4)/(3X5)+(6X6)/(5X7)+...+(20X20)/(19X21)==? 1x2+2x3+3x4+4x5+5x6+6x7+7x8+8x9=