Respuesta :

Answer:

-11/3

Step-by-step explanation:

Answer:

-11/3

[tex]9 = { (\frac{1}{27} )}^{a + 3} [/tex]

[tex] {(3)}^{2} = { ({3}^{ - 3}) }^{a + 3} [/tex]

[tex] {(3)}^{2} = {(3)}^{ - 3a - 9} [/tex]

Since the bases are same, therefore the exponents are equal

2=-3a-9

3a=-9-2

a= -11/3

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