If 3x + 2y = 13 and 2x - y = 4, what is the value of x + y?
✓ Correct Answer: Option A
From the second equation, y = 2x - 4. Substitute this into the first equation: 3x + 2(2x - 4) = 13. This simplifies to 3x + 4x - 8 = 13, so 7x = 21, and x = 3. Substitute x=3 into y = 2x - 4 to get y = 2(3) - 4 = 6 - 4 = 2. Thus, x + y = 3 + 2 = 5.