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17 May, 20:45

X-7y=53 - 4x-5y=19 solve for x and y

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  1. 17 May, 22:39
    0
    y = - 7; x = 4

    Step-by-step explanation:

    x - 7y = 53

    x = 7y + 53

    -4x - 5y = 19

    -4 (7y + 53) - 5y = 19

    -28y - 212 - 5y = 19

    -33y = 231

    -11y = 77

    y = - 7

    x - 7 (-7) = 53

    x + 49 = 53

    x = 4
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