Respuesta :

gmany

Answer:

y = 0

Step-by-step explanation:

x + 3y = 28

Put x = 28 and solve for y:

28 + 3y = 28           subtract 28 from both sides

28 - 28 + 3y = 28 - 28

3y = 0          divide both sides by 3

3y : 3 = 0 : 3

y = 0