Answer:
Solution set = (-5, -2)
Step-by-step explanation:
Given equations;
-7x + 8y = 19 ------------- eq1
7x – 9y=-17 --------------- eq2
Adding both equations:
-y = 2
OR
y = 2
Put value of y in eq2:
7x - 9(-2) = -17
7x + 18 = -17
7x = -17 -18
7x = -35
x = -5
Solution set = (-5, -2)
i hope it will help you!
add
- 7x + 8y + 7x - 9y = 19 - 17
8y - 9y = 2
- y = 2
y = - 2
- 7x + 8(- 2) = 19
- 7x = 19 + 16
- 7x = 35
7x = - 35
x = - 5
