01-2 Simultaneous Equation: poof the denom

Question 1:

Solve the simultaneous equations: 

$ \begin{align}
   \frac{x}{y}+\frac{y}{x}&=\frac{7}{xy}+1 \\
  2x-y&=5
\end{align}$

Question 2:

Solve the simultaneous equations: 

$ \begin{align}
   \frac{6}{x}+\frac{4}{y}&=10 \\
  3x+2y&=10
\end{align}$

Question 3:

Solve the simultaneous equations: 

$\begin{align}
   2x+y&=1 \\
  \frac{y}{x}+\frac{2}{y}+3&=0
\end{align}$

Question 4:

Solve the simultaneous equations: 

$ \begin{align}
   2y-3x &= 5 \\
  \frac{1}{x}+4y&=3
\end{align}$

Question 5:

Solve the simultaneous equations: 

$ \begin{align}
   \frac{x}{2}+\frac{y}{3}&=4 \\
  \frac{xy}{18}&=1
\end{align}$