\(\frac{x-y}{x+y}=\frac{4-3}{4+3}=\frac{1}{7}\)
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Biet \(\frac{x}{y}=\frac{4}{3}\). Khi do \(\frac{x-y}{x+y}=\)?
Cho ba so x, y, z biet \(x-y+z=3\)va \(\frac{x}{2}=\frac{y}{1}=\frac{z}{4}\). Khi do y= ?
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tim x,y,z biet \(\frac{3.X-5.Y}{2}=\frac{5.Y-3.Z}{3}=\frac{3.B}{4};X+Y+Z+17\)=17
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cho x,y,z thoa man \(\frac{x}{2}=\frac{2y}{3}=\frac{3z}{4}\) va x-y=15
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tim x, y, z biet
1. \(\frac{x+y}{2015}=\frac{xy}{2016}=\frac{x-y}{2017}\)
2.\(\frac{2x+2}{3}=\frac{3y-1}{4}=\frac{4x+2}{5}\)va x+y+z=7