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23 July, 19:20

If 4m - 7n = 10 ans 2m + 2n = 4, then what is the value of 2m-9n

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  1. 23 July, 21:45
    0
    Given:

    4m - 7n = 10 ... (1)

    2m + 2n = 4 ... (2)

    (1) - (2)

    4m - 7n - (2m + 2n) = 10-4

    =>

    2m-9n = 6
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