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Christine is saving money to buy a bike. She has 63 and is going to save an additional 9 each week. The bike costs 198 . In how many weeks will she have enough money to buy the bike?
Write an equation that could be used to answer the question above. First, choose the appropriate form. Then, fill in the blanks with the numbers 9,63, and 198 . Let w represent the number of weeks.
_w-_=_ or _w+_=_
(b) Solve the equation in part (a) to find the number of weeks.
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