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23 June, 08:17

Using substitution 3x-5y=11 and x-3y=1

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  1. 23 June, 10:09
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    3x - 5y = 11 ⇒ 3x - 5y = 11

    1x - 3y = 1 ⇒ 3x - 9y = 3

    4y = 8

    4 4

    y = 2

    3x - 5 (2) = 11

    3x - 10 = 11

    +10 + 10

    3x = 21

    3 3

    x = 7

    (x, y) = (7, 2)
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