Respuesta :
Answer:
10y
Step-by-step explanation:
9y is equal to y+y+y+y+y+y+y+y+y.
If you add y to that you get (y+y+y+y+y+y+y+y+y)+y, which is equal to 10y.
Answer:
10y
Step-by-step explanation:
9y+y=10y
If you set y to a value such as 2, you'd get:
18+2=20 which means 10y is correct.