Question

(5x-2y).(x-3)=0

tìm x và y

Answer 1

\(\left(5x-2y\right)\left(x-3\right)=0\)

\(\Rightarrow5x-2y=0\)

\(\Rightarrow x-3=0\Rightarrow x=3\)

\(5.3-2y=0\)

\(15=2y\)

\(y=\dfrac{15}{2}\)

Answer 2

\(\left(5x-2y\right)\left(x-3\right)=0\)

\(\Rightarrow\left[{}\begin{matrix}5x-2y=0\\x-3=0\end{matrix}\right.\) \(\Rightarrow\left[{}\begin{matrix}2y=5.3\\x=3\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}y=\dfrac{15}{2}\\x=3\end{matrix}\right.\)

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