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28 December, 13:04

8x = 2y + 5 3x = y + 7 Solve the system of equations by substitution.

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  1. 28 December, 15:49
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    3x = y + 7

    y = 3x-7

    8x = 2y + 5

    8x = 2 (3x-7) + 5

    8x=6x-14+5

    8x-6x=-9

    2x=-9

    x=-4.5

    8x = 2y + 5

    8 (4.5) = 2y+5

    36=2y+5

    2y=31

    y=15.5
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