Respuesta :
Answer: 6a+27x
Step-by-step explanation:
combine 18a and -12a
combine 12x and 15 x
thus the answer
Hope I helped!
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: