Answer:
D. {-8, -5, 3, 7}
Step-by-step explanation:
__________
Answer: (D) 
Explanation:

Just a note on writing down these expressions: I recommend using parentheses whenever you can to avoid misinterpretation. An expression 1/x-1/y / 1/x+1/y could be interpreted by someone as 1/x-(1/y / 1/x)+1/y, which is a different thing.
I=Ishaan
C=Christopher
I/3=C
I-14=C
Substitute
I/3=I-14
I=3I-42
-2I=-42
Ishann = 21
Answer:
(4,14) because both lines pass through it.
Step-by-step explanation:
A "solution" to a system of equations is simply a point that both lines pass through.
First image is the solution found through graphing and the second image is the solution found through substitution.