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27 June, 11:49

Using the substitution method to solve the system. 5x+2y=5 x=3y-16

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Answers (2)
  1. 27 June, 12:04
    0
    5x + 2y = 5

    Since, x = 3y - 16

    Therefore,

    5 (3y - 16) + 2y = 5

    15y - 80 + 2y = 5

    17y = 85

    y = 5

    therefore,

    x = - 1

    y = 5
  2. 27 June, 12:12
    0
    5x+2y=5

    x=3y-16

    5 (3y-16) + 2y=5

    15y-80+2y=5 collect the like terms

    15y+2y=5+80

    17y=85 divide both sides by 17

    y=5

    5x+2 (5) = 5

    5x+10=5

    5x=-5

    x=-1

    so x=-1 and y=5
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