Respuesta :
Answer:
x+2y=_1
x_y=8
multiplay number infornt of y each sides
_x +2y=1
2x_ 2y=16
x=17
Step-by-step explanation:
Answer: x=5 and y= -3
Explanation:
x + 2y = -1
x - y = 8
change the signs of the second equation (-x +y = -8)
x + 2y = -1
-x + y = -8
add this up (as x cancels out u should get) 3y = -9
y = -3
substitute this ( x + 2(-3) = -1)
x + (-6) = -1
x= +6 - 1
x=5
