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math same question as before with new questions to

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The local fish market is having a sale on whole fish. the prices are as follows:

You can buy an albacore and a barracuda for$21
You can buy a barracuda and a carp for $24
You can buy a carp and a dogfish for $32
You can buy a dogfish and an eel for $37
You can buy an eel and flounder for $31
You can buy a flounder and a gar for $25
You can buy gar and an albacore for $26

Determine the cost of each individual fish

i understand that
B=21-A
C=24-21+A
D=32-4-A
E=37-28+A
F=31-9-A
G=25-22+A
and A=26-3-?
my question is what variable goes where the ? is. i think its b but i'm not sure

  • math same question as before with new questions to - ,

    Many of your equations are wrong.
    B = 21 - A
    C = 24 -(21 -A) = 3 + A
    D = 32 - (3 + A) = 29 - A
    E = 37 - (29 - A) = 8 + A
    F = 31 - (8 + A) = 23 - A
    G = 25 - (23 - A) = 2 + A
    G + A = 26

    The last two equations can be solved for A, which is 12

  • math same question as before with new questions to - ,

    i still don't understand how you got 12, but thank you for your help!

  • math same question as before with new questions to - ,

    Combining the last two equations gives you
    G + A = (2 + A) + A = 26
    2A = 24
    Do you see it now?

  • math same question as before with new questions to - ,

    oh! thanks i get it now

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