Respuesta :

9x - 5y = 29....when x = 1
9(1) - 5y = 29
9 - 5y = 29
-5y = 29 - 9
-5y = 20
y = 20/-5
y = -4 <==
y: -4 
9x-5y=29
9-5y=29
5y=20
-5y/-5=20
y=-4