The solution for $x$ from the first equation is:

$x = \frac{4y}{7} - \frac{9}{7}$

Would you like me to proceed with solving the second equation or provide more details about this step?

Here are some follow-up questions you might explore:

1. How can this expression for $x$ be substituted into the second equation?
2. What are the next steps after substituting $x$ in the second equation?
3. What happens if $y$ is isolated in the second equation?
4. Can this system of equations be solved using matrices?
5. How can we interpret the result geometrically?

Tip: Always double-check your algebraic manipulation to avoid errors, especially when working with fractions.