Answer:
y = -8
Step-by-step explanation:
It is given that,
-x - y = 7 ---(1)
x - y = 9 ---(2)
To find the solution
Add eq (1) and eq(2) we get
-x - y = 7 ---(1)
x - y = 9 ---(2)
0 - 2y = 16
y = 16/(-2) = -8
Substitute the value of y in eq(1)
-x - y = 7 ---(1)
-x - -8 = 7
-x + 8 = 7
x = 8 - 7 = 1
Therefore x = 1 and y = -8
