Question

.Solve the system of equations. Use elimination

x + 2y = -3
x - y = -12
a) (-9,3)
b) (-7,5)
c) (9, 6)
d) (3, 15)​

Answer 1

a) (-9,3)

Explanation:

x + 2y = -3

- (x - y = -12)

x + 2y = -3

- x + y = 12

3y = 9

y = 3

x - y = -12

x- 3 = -12

x= - 9

(-9, 3)