The answer is the second option given
ah, those are systems you want one variable to cancel out. I would time the bottom equation by -1 so x cancels then u solve for y. then u plug all back in to solve for x.
Answer:
11 in
Step-by-step explanation:
Standard paper is 11 x 8 inches
The reciprocal of a number is the opposite of any known/unknown number
-x
four subtracted from this
-x-4