Choice C is the correct answer. Since $x = 2y + 3$ is already iSolution: $(7, 2)$

Verification: $3(7) - 2 = 21 - 2 = 19$ ✓

💡 Strategic Tip: When one variable is already isolated, substitution is the fastest method.

Choice A is incorrect because$3(5) - 1 = 15 - 1 = 14 \ eq 19$.

Choice B is incorrect because$3(9) - 3 = 27 - 3 = 24 \ eq 19$.

Choice D is incorrect because$3(11) - 4 = 33 - 4 = 29 \ eq 19$.