Question #N674
If $x + y = 7$ and $x - y = 3$, what is the value of $x$?
A. 2
B. 3
C. 5
D. 10
Correct Answer is: C
To solve for x, we can add the two equations together. Notice that the y terms will cancel out. (x + y) + (x - y) = 7 + 3. This simplifies to 2x = 10. Dividing both sides by 2 gives x = 5.