Choice C is the correct answer. Use substitution. From second: $x = 1 + 2y$.

Step 1: Substitute into first: $2(1 + 2y) + 5y = 24$$2 + 4y + 5y = 24$$9y = 22$$y = \frac{22}{9}$

• Second: $3 - 2(\frac{18}{5}) = 3 - \frac{36}{5} = \frac{15-36}{5} = -\frac{21}{5} \ eq 1$
• First: $2(3) + 5(\frac{18}{5}) = 6 + 18 = 24$ ✓

** 💡 Strategic Tip: Coefficient of 1 on x makes substitution easy.

**Other choices fail.