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23 January, 07:03

Solve for x. Show each step of the solution.

2.5 (10 - x) + 21 = 84 - 3.5 (3x + 20)

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  1. 23 January, 07:30
    0
    Solve the first part of the equation

    2.5 X 10 = 25

    2.5 X - x = - 2.5x

    + 21

    which all added together equals - 2.5x + 46

    Now for the second part of the equation

    - 3.5 X 3x = - 10.5x

    - 3.5 X 20 = - 70

    + 84

    which all added together gets you - 10.5x + 14

    once you have both parts of the two sides solved, you have to start subtracting from each sides

    - 2.5x + 46 = - 10.5x + 14

    - 46 + 46

    - 2.5x = - 10.5x + 60

    -10.5x + 10.5x

    -13x = 60

    60 : - 13x

    x = - 4.61
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