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11 November, 13:47

The difference of two numbers is 12. the larger number is one less than twice the smaller number. find the two numbers.

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  1. 11 November, 14:00
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    X-y=12

    x-1=2y

    x-1/2=2y/2

    y=1/2x-1/2

    x-y=12

    x - (1/2x-1/2) = 12

    x-1/2x+1/2=12

    1/2x+1/2-1/2=12-1/2

    1/2x:1/2=11 1/2:1/2

    x=23

    x-y=12

    23-y=12

    23-23-y=12-23

    -y=-11

    y=11

    Check

    23-1=2 (11)

    22=22
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