Respuesta :
6a - 3a + 9a= 12a yes u must makesure that u must have to do the working ive alrdy wrote it up there so u cn just follow okay thanks
Answer: 12a
Step-by-step explanation:
All we need to do is combine the like terms. Which all of them have the common variable a so we can add and subtract them together.
6a - 3a + 9a
Working left to right according to pemdas we can subtract first.
3a + 9a
Now add.
12a
That is as far as we can simplify.