Question #N421
If $3x - 2y = 7$ and $x + 2y = 5$, what is the value of $x$?
A. 1
B. 2
C. 3
D. 4
Correct Answer is: C
We can solve for $x$ by adding the two equations together. Notice that the $y$ terms cancel out. This gives us: $3x - 2y + x + 2y = 7 + 5$, or $4x = 12$. Dividing both sides by 4, we get $x = \frac{12}{4}$, or $x = 3$.