Respuesta :

 7x+2y=2

steps:
y+21=-7/2x(x-6)
y+21=-7/2x+21
y=-7/2x+21-21 
y=-7/2x
7/2x+y=0
2(7/2x+y=0)
7x+2y=2  

Answer:

7x+2y=2

Step-by-step explanation:

7x+2y=2

y+21=-7/2x(x-6)

y=-7/2x+21-21  

2(7/2x+y=0)

7x+2y=2