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27 December, 20:29

What is the answer to this answer of this question: 3.1 (2f+1.2) = 0.2 (f-6) ? I need it fast!

8-10 minutes tops!

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Answers (1)
  1. 27 December, 22:49
    0
    Simplifying

    3.1 (2f + 1.2) = 0.2 (f + - 6)

    Reorder the terms:

    3.1 (1.2 + 2f) = 0.2 (f + - 6)

    (1.2 * 3.1 + 2f * 3.1) = 0.2 (f + - 6)

    (3.72 + 6.2f) = 0.2 (f + - 6)

    Reorder the terms:

    3.72 + 6.2f = 0.2 (-6 + f)

    3.72 + 6.2f = (-6 * 0.2 + f * 0.2)

    3.72 + 6.2f = (-1.2 + 0.2f)

    Solving

    3.72 + 6.2f = - 1.2 + 0.2f

    Solving for variable 'f'.

    Move all terms containing f to the left, all other terms to the right.

    Add '-0.2f' to each side of the equation.

    3.72 + 6.2f + - 0.2f = - 1.2 + 0.2f + - 0.2f

    Combine like terms: 6.2f + - 0.2f = 6f

    3.72 + 6f = - 1.2 + 0.2f + - 0.2f

    Combine like terms: 0.2f + - 0.2f = 0.0

    3.72 + 6f = - 1.2 + 0.0

    3.72 + 6f = - 1.2

    Add '-3.72' to each side of the equation.

    3.72 + - 3.72 + 6f = - 1.2 + - 3.72

    Combine like terms: 3.72 + - 3.72 = 0.00

    0.00 + 6f = - 1.2 + - 3.72

    6f = - 1.2 + - 3.72

    Combine like terms: - 1.2 + - 3.72 = - 4.92

    6f = - 4.92

    Divide each side by '6'.

    f = - 0.82

    Simplifying

    f = - 0.82
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