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Elis [28]
3 years ago
8

Jaoquin buys 3 dozen lightbulbs. After changing the lightbulbs in his house, he has 15 lightbulbs left. How many lightbulbs did

he use? Explain your work. I need the help like right now!!
Biology
2 answers:
Karolina [17]3 years ago
8 0
<span>Well, you know that 1 dozen = 12 items so if you have 3 dozen, that means 12 x 3 = 36 Set up an equation: 36 + x = 15 solve for x which represents the amount he used.</span>
Inga [223]3 years ago
7 0
Dozen = 12
12 x 3 = 36

36 light bulbs in total 
15 left

so 36 - 15 = 21

answer = 21

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