Respuesta :

Answer:

3.21

Step-by-step explanation:

19.9=9y-8

28.9=9y

3.21

Answer:

y=3.1

Step-by-step explanation:

you have to add 8 to 19.9 which equals  27.9

then you have to divide 27.9 by 9 which equals 3.1

27/9=3

0.9/9=0.1

3+0.1=3.1