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7 March, 11:26

The sum of two numbers is 18 and the difference is 8

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  1. 7 March, 11:27
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    x = 13 and y = 5

    Step-by-step explanation:

    x + y = 18

    x - y = 8

    Step 1: Find y

    x = 18 - y

    (18 - y) - y = 8

    18 - y - y - 18 = 8 - 18

    -2y / - 2 = - 10 / - 2

    y = 5

    Step 2: Plug into x + y = 18 to get x

    x + 5 - 5 = 18 - 5

    x = 13

    Answer: x = 13 and y = 5
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