Question #N590
If $3x - 2y = 5$ and $x + 2y = 7$, what is the value of $x$?
A. 2
B. 3
C. 4
D. 5
Correct Answer is: B
Notice that the $y$ terms have opposite signs in the two equations. Adding the two equations together, we get $(3x - 2y) + (x + 2y) = 5 + 7$. This simplifies to $4x = 12$, so $x = 3$.