Answer: x = 4.5, y = -4.5/3
Explanation:
5x+y = 21 ---- 1
x - 3y = 9 ----- 2
Using Elimination Method, we can solve for x,
Multiply Eq 1 with 3-
15x+3y = 63
(1) + (2)
15x+3y = 63
x - 3y = 9
___________
16x = 72
x = 4.5
Hence, putting x in Eq 2, gives us y = -4.5/3