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17 April, 06:39

The sum of two numbers is 63, and their difference is 7. Find the numbers. Use x - (63-x) = 7

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  1. 17 April, 06:46
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    The two numbers are 28 and 35.

    Step-by-step explanation:

    x + y = 63

    x - y = 7

    Get one equation with one variable. We can't solve for a variable if we had two variables in one equation.

    Add the two equations together.

    2x = 70

    x = 35

    You see, the y's canceled out and we can solve for x.

    Now plug x back in to solve for y.

    35 - y = 7

    -y = - 28

    y = 28
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