Respuesta :

Answer:

y=3

Step-by-step explanation:

3x+2y=9

Let x =1

3*1+2y=9

3 +2y = 9

Subtract 3 from each side

3-3+2y=9-3

2y = 6

Divide each side by 2

2y/2 = 6/2

y =3