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5 February, 17:07

Find the value of n.

1. 7y + y = 7y + ny

2. (6+n) x = 15

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Answers (1)
  1. 5 February, 17:59
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    1) 7y + y = 7y + ny (Combine like terms)

    8y = 7y + ny (Subtract 7y from both sides)

    y = ny (divide both sides by y)

    n = 1

    2) (6 + n) x = 15 (Do the multiplication/expand)

    6x + nx = 15 (Subtract 6x from both sides)

    nx = - 6x + 15 (divide both sides by x)

    n = (-6x + 15) / x
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