x+2y/2 = 2x-y/3 = 1怎么算?
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x+2y/2=2x-y/3=1怎么算?x+2y/2=2x-y/3=1怎么算?x+2y/2=2x-y/3=1怎么算?(x+2y)/2=(2x-y)/3=1x+2y=2①2x-y=3②②×2得4x-2y=
x+2y/2 = 2x-y/3 = 1怎么算?
x+2y/2 = 2x-y/3 = 1怎么算?
x+2y/2 = 2x-y/3 = 1怎么算?
(x+2y)/2 =(2x-y)/3 = 1
x+2y=2 ①
2x-y=3 ②
②×2得4x-2y=6 ③
①+③得5x=8
x=8/5
把x=5/8代入②得y=1/5
所以x=8/5,y=1/5
您好:
x+2y/2=1
2x+4y=2
2x-y/3=1
2x-y=3
8x-4y=12
两式相加
2x+8x=2+12
10x=14
x=1.4
y=2x-3=2*1.4-3=-0.2
不明白,可以追问
如有帮助,记得采纳,谢谢
祝学习进步!
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