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Thread: word problem #29

  1. #1
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    word problem #29

    can someone show how to set up the equation to solve this word problem please.

    One number is 4 more than another number. Find the two if two times the larger number is 7 less than 5 times the smaller.

    the books solution is 5 & 9
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  2. #2
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    Quote Originally Posted by jwarfield09 View Post
    can someone show how to set up the equation to solve this word problem please.

    One number is 4 more than another number. Find the two if two times the larger number is 7 less than 5 times the smaller.

    the books solution is 5 & 9

    Hi , lets call the 2 numbers x and y .

    y=x+4 --1

    Then we know that y is the larger one and x is the smaller one .

    2y=5x-7 ---2

    Then solve the simultaneous equation .
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  3. #3
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    Quote Originally Posted by mathaddict View Post
    Hi , lets call the 2 numbers x and y .

    y=x+4 --1

    Then we know that y is the larger one and x is the smaller one .

    2y=5x-7 ---2

    Then solve the simultaneous equation .
    But, if you want a single equation....

    Let x = smaller number
    Let x + 4 = the larger number

    2(x + 4) = 5x - 7
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