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sally and marta had the same number of postards. after sally sold 18 postards, marta had 4 times as many as sally. how many ostcards did eeach girl have to begin with
11 years ago

Answers

Henry





Sally has X postcards.
Marta has X postcards.

X = 4(X-18)
Solve for X.



























11 years ago
aleena
24
10 years ago

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