Question #N215
If $2x + 3y = 12$ and $x - y = 1$, what is the value of $x$?
A. 2
B. 3
C. 4
D. 5
Correct Answer is: B
We can solve for $x$ by using elimination. Multiply the second equation by 3, which gives $3x - 3y = 3$. Adding this equation to the first equation, we get $5x = 15$. Dividing both sides by 5, we get $x = 3$.