Answer:
Step-by-step explanation:
I'll assume that you meant:
7x−5y=28
7x−5y=28
These equations are identical, so any x-y pair that satisfies one satisfies the other. Unfortunately we don't have enough information to determine either x or y. But we could (arbitrarily) choose x = 5 and find the corresponding y:
7(5) - 5y = 28, or
35 - 5y = 28, or
7 = 5y, or y = 7/5
Thus, (5, 7/5) satisfies both equations, but this is far from being the only solution.
Double check to ensure that you have copied this problem down correctly. Also: If you're going to present two equations, separate them with a space or write them in a column as I did (above).
