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28 July, 12:27

7x+2y=24 and 8x+2y=30

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  1. 28 July, 12:54
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    I guess you want to find the values of x & y. If so:

    7x+2y=24

    8x+2y=30

    1) multiply the 1st equation by (-1) = = > - 7x-2y=-24

    2) Now add - 7x-2y=-24 to 8x+2y=30 = = > x + 0y = 6 = = > x = 6

    3) replace x by 6 in any of te two equation & you will find y = - 9
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