In a group of 25 boys , 8 are in the Science League team and 13 in the math League team and 6 in both the teams. How many are not in any tea

Question

In a group of 25 boys , 8 are in the Science League team and 13 in the math League team and 6 in both the teams. How many are not in any team?

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Hưng Khoa 3 years 2021-08-27T18:56:54+00:00 1 Answers 2 views 0

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  1. MichaelMet
    0
    2021-08-27T18:58:53+00:00
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    10 girls are not on either team

    first subtract 6 from 8 to get 2 (since it’s easier) because those 6 girls are on the math league team as well
    next add 2 and 13 to get 15
    last subtract 15 from 25 to get 10

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )