Math
posted by Hatsune Miku .
6 cd+2b+9(cd+b/3)=A(3cd+b)
I'm really sorry this question seems really hard to me. But what I got as an answer is 6, ohh and I have another question. Can you use the distributive property on this problem? (Argh our class is getting ready for the PSAT!) And show me the work, I want to know if I got something wrong in my work lol sorry

Math 
Damon
hummm 6+9 IS NOT 18 BUT 15
6 c d + 2 b + 9 c d + 3 b = A(3cd+b)
15 c d + 5 b = A(3cd+b)
5 (3cd+b) = A(3cd+b)
A = 5 
Math 
Hatsune Miku
On the last thing which is 5 (3cd+b) = A(3cd+b), how did you get 5 as an answer? Can you teach me step by step? Sorry omg I'm so confused

Math 
Hatsune Miku
Did you divide something to get 5? But I don't see any division signs anywhere

Math 
Hatsune Miku
I still don't get it... Sorry... Or did you cross both (3cd+b)'s and got your answer?

Math 
bobpursley
5 (3cd+b) = A(3cd+b)
A = 5
Math  Hatsune Miku, Sunday, April 30, 2017 at 10:58am
On the last thing which is 5 (3cd+b) = A(3cd+b), how did you get 5 as an answer? Can you teach me step by step? Sorry omg I'm so confused
Math  Hatsune Miku, Sunday, April 30, 2017 at 11:00am
Did you divide something to get 5? But I don't see any division signs anywhere
If 5 (3cd+b) = A(3cd+b)
divide both sides by (3cd+b)
then
A=5 
Math 
Damon
divide both sides of
5 (3cd+b) = A(3cd+b)
by
(3cd+b)
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