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20 January, 02:56

7 (-5x-5) = 245 what is x?

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Answers (2)
  1. 20 January, 05:47
    0
    The answer is x = - 8.

    To show my work, here.

    1. divide both sides by 7 (-5x - 5 = 35)

    2. simplify 245/7 to 35 (-5x - 5 = 35)

    3. add 5 to both sides (-5x = 35 + 5)

    4. simplify 35 + 5 to 40 (-5x = 40)

    5. divide both sides by - 5 (x = - 40/5)

    6. lastly simplify 40/5 to 8 (x = - 8)
  2. 20 January, 05:48
    0
    Multiply out brackets:

    -35x-35=245

    +35 to each side:

    -35x=280

    Divide by - 35:

    x=280/-35

    x=-8
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