Answer:
x = -9 and
y = -10
Explanation:
a) - 2x - 3y = 48
b) - x + 2y = - 11
b) 2y + 11 = x
a) -2(2y + 11) - 3y = 48 (substitution)
- 4y - 22 - 3y = 48
-7y = 48 + 22
-7y = 70
y = 70/- 7
y = -10
b) -x + 2(-10) = - 11
- x - 20 = - 11
- x = -11 + 20
- x = 9
x = -9