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OpenStudy (anonymous):
A pack of gum costs 75 cents. That is 3 cents less than three times what the pack cost 20 years ago. Which equation could be used to find the cost of the gum 20 years ago?
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OpenStudy (anonymous):
3x -3 = 75
OpenStudy (unanimoose):
Ok one, don't give them a straight answer, and two, please respect that I am typing out an explanation for them.
OpenStudy (anonymous):
75=3x-3 or (75-3)/3
OpenStudy (anonymous):
=x
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