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11 December, 07:11

What is the value of n in the equation 0.2 (n - 6) = 2.8?

(1) 8 (3) 20

(2) 2 (4) 44

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Answers (1)
  1. 11 December, 07:17
    0
    So,

    0.2 (n - 6) = 2.8

    Distribute.

    0.2n - 1.2 = 2.8

    Add 1.2 to both sides.

    0.2n = 4

    Divide both sides by. 2.

    n = 20

    Check.

    0.2 (20 - 6) = 2.8

    Simplify inside parentheses.

    0.2 (14) = 2.8

    Multiply.

    2.8 = 2.8 This checks.

    S = {2.8}
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