Question #N617
If $x+2y=6$ and $x-2y=4$, what is the value of $x$?
A. 1
B. 2
C. 4
D. 5
Correct Answer is: D
We can solve for $x$ by adding the two equations together. Notice that the $y$ terms will cancel out. $(x+2y) + (x-2y) = 6 + 4$ or $2x = 10$. Dividing both sides by 2, we get $x = 5$.