Math

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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 -

    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 -

    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 -

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

  • Math -

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

  • Math -

    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 -

    divide both sides of
    5 (3cd+b) = A(3cd+b)
    by
    (3cd+b)

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