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The numbers of girls in a second grade class in 4 less than the number of boys. Let b represent the number of boys in the class, and write an expression that represents the number of girls ( please write an expression!)

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seungjinseok2002
The number of girls is 4 less than boys , which means the number of girls is 4 subtracted from the number of boys, which is b-4
fichoh

The expression which represents the number of girls expressed in terms of the number of boys is b - 4

Let :

  • Number of boys = b
  • Number of girls = Number of boys minus 4

The number of girls can be expressed in terms of the number of boys in the class thus :

Number of girls = Number of boys - 4

Number of boys = b

Hence,

Number of girls = b - 4

Therefore, the expression for the number of girls in the class is b - 4

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