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18 May, 09:49

Solve the system using by the addition method

3x = 5y+9

6x = 6-4y

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Answers (1)
  1. 18 May, 11:07
    0
    To use the addition method we will multiply the first equation with - 2

    -6x = - 10y-18

    6x = - 4y + 6 we will add them both and have

    0 = - 14y - 12, - 14y-12=0, y = 12/14=6/7, y=6/7

    now we solve for x

    3x=5y+9

    3 x=5 (6/7) + 9, 21x=30+63, x=93/21=31/7

    y = 6/7, x=31/7
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