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x-y-5-2x-y-1-




Question Number 12300 by nga last updated on 18/Apr/17
 { ((x+y=5)),((2x−y=1)) :}
$$\begin{cases}{{x}+{y}=\mathrm{5}}\\{\mathrm{2}{x}−{y}=\mathrm{1}}\end{cases} \\ $$
Answered by ajfour last updated on 18/Apr/17
3x=6  x=2  y=5−x =5−2=3  y=3 .
$$\mathrm{3}{x}=\mathrm{6} \\ $$$${x}=\mathrm{2} \\ $$$${y}=\mathrm{5}−{x}\:=\mathrm{5}−\mathrm{2}=\mathrm{3} \\ $$$${y}=\mathrm{3}\:. \\ $$

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