4x + 7y = -1
-4x + y = 41
Add both equations to eliminate the x variable.
4x + 7y = -1
+
-4x + y = 41
___________
8y = 40
Divide both sides by 8
8y/8= 40/8
y= 5
replace y=5 on any equation:
4x + 7y = -1
4x + 7(5) = -1
4x +35 = -1
Solve for x
4x = -1-35
4x = -36
x = -36/4
x =-9
Solution:
x=-9 , y=5