一、五式相加,再除以六,答案为31. 二、3式+4式+5式-1式-2式=150
一道初一数学题若X1,X2,X3,X4,X5满足方程组:2X1+X2+X3+X4+X5=6 ①X1+2X2+X3+X4+
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关于二元一次方程组若X1,X2,X3,X4,X5满足下列方程组:2X1+X2+X3+X4+X5=6X1+2X2+X3+X
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若X1-X5满足下列方程组2乘X1 +X2+X3+X4+X5=6X1+ 2乘X2 +X3+X4+X5=12X1+X2+
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已知,正数x1,x2,x3,x4,x5,x6,同时满足:(X1X2X3X4X5X6)/X1=1,(X1X2X3X4X5X
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已知,正数x1,x2,x3,x4,x5,x6,同时满足:(X1X2X3X4X5X6)/X1=1,(X1X2X3X4X5X
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用基础解系表示方程组通解 x1+x2-3x4-x5=2 x1-x2+2x3-x4=1 4x1-2x2+6x3+3x4-4
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x1+5x2+2x3-4x4=3 -3x1-2x2+3x3+4x4=-6 -x1+3x2-x3-4x4=-2 -2x1+
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求方程组的通解2X1-3X2+X3-5X4=1,-5X1-10X2-2X3+X4=-21,X1+4X2+3X3+2X4=
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简单线代题///X1+X2+X3+X4+X5=13X1+2X2+X3+X4+3X5=0 X2+2X3+2X4+6X5=3
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3(x+2)/x-3+ x+3/x-2=4 1/x+1 + 2x/x+1=2 5x/x+2 + 3/x^2+4x+4=5
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解方程,初一6X-3(X-1)=5(1-2X)-3(4X-4) X/2- 5X+12/6 =1+ 2X-4/3 (/号前