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the sum of two decimal numbers is 5.3. their difference is 1.7 and there product is 6.3 what are the two numbers?

  • math -

    x = one number
    y = other number.
    ===============
    x+y=5.3
    x-y=1.7
    Solve for x and y.
    You don't need the other information but it can be used if you wish.

  • math -

    x+y = 5.3
    x-y = 1.7
    add them
    2x = 7.0
    x = 3.5
    then y = 1.8

    the info that their product is 6.3 was redundant, but checked out.

  • math -

    1.8 and 3.5. I just used guess and check. I knew that the numbers had to be under 5.3. Also, the number in the tenths place had to add up to 13 or 3, so 1.8 and 3.5.

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