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Mathematics, 05.09.2019 02:30 wesleygrimes0

6th grade math
drusilla replaces the light bulb in the hall closet every 9 months and replaces the air filter every 6 months. she just replaced both items this month. after how many months will she replace both the light bulb and the air filter?

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6th grade math
drusilla replaces the light bulb in the hall closet every 9 months and replaces...
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