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14 September, 15:59

Solve the system by the elimination method. Check your work. 3a + 5b - 7 = 0 a - 2b - 4 = 0

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  1. 14 September, 18:59
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    3a + 5b - 7 = 0

    0a - 2b - 4 = 0

    -2b = 4 - 0a

    b = (4 - 0a) / - 2

    b = - 2

    3a + 5b - 7 = 0

    3a + 5 (-2) - 7 = 0

    3a - 10 - 7 = 0

    3a - 17 = 0

    3a = 17

    a = 17/3 or 5 2/3
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