Question

Answer 1

5x=2y

=>\(\frac{x}{2}=\frac{y}{5}\)

Đặt \(\frac{x}{2}=\frac{y}{5}=k\)

=>x=2k; y=5k

\(x^3+y^3=133\)

=>\(\left(2k\right)^3+\left(5k\right)^3=133\)

=>\(8k^3+125k^3=133\)

=>\(133k^3=133\)

=>\(k^3=1\)

=>k=1

=>\(\begin{cases}x=2\cdot1=2\\ y=5\cdot1=5\end{cases}\)