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21 November, 09:57

Solve using substitution method 2x+2y=-3 2*-y=5

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  1. 21 November, 10:05
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    A) 2x + 2y = - 3

    B) 2x - y = 5

    B) y = 2x - 5

    Substituting equation B into A

    A) 2x + 2 * (2x-5) = - 3

    2x + 4x - 10 = - 3

    6x = 7

    x = 1.16666666

    y = 2 * 1.16666667 - 5

    y = - 2.66666666
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