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8 April, 08:47

The sum of two numbers is 17 and their difference is 29. Write the system of equations and solve using the best method. What are the two numbers?

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  1. 8 April, 09:08
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    Let's do this algebraically ...

    x + y = 17 (subtract)

    - (x - y = 29)

    x + y = 17

    -x + y = - 29

    2y = - 12 divide both by 2

    y = - 6 use this in an original equation

    x + y = 17

    x - 6 = 17 add 6 to both sides

    x = 23

    our numbers are 23 and - 6
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