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March 26, 2017

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Kelly is nine years older than her sister. Kelly's age is one more than twice her sister's age. What is Kelly's age?
how do I solve this problem?

  • algebra - ,

    K = S + 9
    K = 2S + 1

    s + 9 = 2S + 1
    -S -s

    9 = S + 1
    8 + S
    K = 17

  • algebra - ,

    thanks

  • algebra - ,

    aDS9UH89REWI0W

  • algebra - ,

    John is as many years older than his brother as he is younger sister if you know the age of his brother and is sister, how can you find John's age?

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