Question

[tay le cong]

x/2=y/3 va 4x-3y=-2

Answer 1

[Winkies]

Đặt : \(\frac{x}{2}=\frac{y}{3}=k\)

\(\Rightarrow x=2k;y=3k\)

Khi đó : \(4\left(2k\right)-3\left(3k\right)=-2\)

\(\Rightarrow8k-9k=-2\)

\(\Rightarrow-k=-2\)

\(\Rightarrow k=2\)

\(\Rightarrow x=2.2=4\)

\(\Rightarrow y=2.3=6\)

Answer 2

[Hoàng Thế Hải]

\(\frac{x}{2}=\frac{y}{3}=\frac{4x-3y}{4.2-3.3}=\frac{-2}{-1}=1\)

\(\Rightarrow x=1.2=2\)

\(\Rightarrow y=1.3=3\)