Respuesta :

Answer: 6a+27x

Step-by-step explanation:

combine 18a and -12a

combine 12x and 15 x

thus the answer

Hope I helped!

Kritu3

Answer:

18a + 12x - 12a + 15x

combining like terms we get

6a + 27x

Now we can take common from them

3(2a + 9x)

Step-by-step explanation:

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