4a+7b-12c-8a-9b+12d
Now you have to combine like terms, so a and a, B and B etc.
4a-8a=-4a
7b-9b=-2b
No more like term
-4a-2b-12c+12d
Have a nice day
Answer:
Step-by-step explanation:
6 times 2 times pi divided by 2 = 18.8495559215
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Answer:
He got 30 right!
Step-by-step explanation:
