x=9/14;y=-17/42
4X一6=5 5X十3y=2
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相关问题
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(1十2/3+3/4+4/5)x(2/3十3/4+4/5十5/6)一(1+2/3十3/4十4/5十5/6)x(2/3十3
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x十3x=-16 3x十5=4x+1 9-3y=5y十5
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解下列方程组; (1) [x十y=8,5x十1=2(x十y); (2)[2x十5y=12,2x十3y=6.
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1.8x+5y=10 8x-5y=10 2.3x+2y=9 4x-2y=5 3.2x+3y=5 6x-2y=-6 4.3
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解方程。15一X=2.5,6X十2X=40.8,0.4X6十3X=10.5。
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2X=3Y,4x-5y=2 -6x+5y=3,3x=4y 2x+3y=5,3x=y-9 3x=1-y,3x=2y-5
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(x+y)/4=(x-y)/5=(3x-2y+5)/6
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6/1(3x-6)=5/2x-3 3(x-7)+5(x-4)=15 4x-3(20-x)=-4 2/y-1=2-5/y+
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解方程组x-3y=2,-2x十6y=5
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{2x/3+4/3y=1/5 6/5x-2/5y=2}