Respuesta :

allaliar

Answer:

9. C

10. C

11. C

Step-by-step explanation:

9.

simply, [tex]\frac{4}{5} >\frac{2}{3}[/tex]

10.

the greatest divisor of 28 is 7, so:

28 + 7 = 35

11.

the greatest divisor of 15 is 5, so:

15 + 5 = 20

n = 20

the greatest divisor of 20 is 10, so:

20 + 10 = 30

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