解方程组:3x+2y\4=2x+y+2\5=-x+5y\3.
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解方程组:3x+2y\4=2x+y+2\5=-x+5y\3.解方程组:3x+2y\4=2x+y+2\5=-x+5y\3.解方程组:3x+2y\4=2x+y+2\5=-x+5y\3.(3X+2Y)/4=
解方程组:3x+2y\4=2x+y+2\5=-x+5y\3.
解方程组:3x+2y\4=2x+y+2\5=-x+5y\3.
解方程组:3x+2y\4=2x+y+2\5=-x+5y\3.
(3X+2Y)/4=(2X+Y+2)/5 (1)
(2X+Y+2)/5=-(X+5Y)/3 (2)
由(1)式得
15X+10Y=8X+4Y+8
7X+6Y=8 (3)
由(2)式得
6X+3Y+6=-5X-25Y
11X+28Y=-6 (4)
(3)*11-(4)*7
Y=-1
将Y=-1代入(3)
X=2
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