Respuesta :

Mosogourmet
You minus 4 from 19

19 - 4 = 15

You divide 15 by 3 to get y.

15 ÷ 3 = 5 ( 3 × 5 = 15 )

y = 5

3 × 5 + 4 

15 + 4 = 19
Kaustav
3y + 4 = 19
3y = 19 - 4
3y = 15
y = 15 / 3
y = 5