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16 May, 22:20

8x-9y=19 4x+y=-7 How Do I Do This Type Of Math

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  1. 17 May, 02:16
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    8x-9y=19

    4x+y=-7

    Multiply all terms of the 2nd by (9) = = = > 36x + 9y = 63

    add (36x 9y = 63) to the 1st = = = > 44x+0y = - 44 = = = > x=-1

    replace x by this value in any of the equation & you'll get y=-3
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