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A problem states: "there are 7 more girls than boys in a club. There are 23 members in the club in all. How many girls are there in the club? Let g represent the number of girls. Which expression represents
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Apr 18, 2018
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A problem states: "there are 7 more girls than boys in a club. There are 23 members in the club in all. How many girls are there in the club?
Let g represent the number of girls.
Which expression represents the number of boys?
A: g+7
B:g•7
C: 7-g
D:g-7
Mathematics
high-school
Yuxiaoyu
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The answer is D(g-7)
Jinzhao Huo
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Apr 20, 2018
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Jinzhao Huo
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Let
g = number of girls in the club
b = number of boys in the club.
There are 7 more girls than boys in the club, therefore
g = b + 7
Subtract 7 from each side.
g - 7 = b + 7 - 7
g - 7 = b
That is,
b = g - 7
Answer: D. g - 7
Giggsey
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Apr 25, 2018
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Giggsey
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