Answer:
x = 10, y = -1
Step-by-step explanation:
x - y = 11 . . . . . . . eq 1
2x + y = 19 . . . . . . eq 2
Substitute eq 1 into eq 2.
Hence eq 1 = x = 11 + y
Substituting into eq 2 will give you;
2(11 +y) + y = 19
22 +2y + y = 19
3y = 19 - 22
3y = -3
y = -1
Substitute y into eq 1 to get x
that is x - (-1) = 11
x = 11 - 1
x = 10
