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16 September, 08:47

Mr. pham wrote the equation below on the board.

18-7x=-20.5

what is the value of x?

A. - 5 1/2

B. - 5/14

C. 5/14

D. 5 1/2

+5
Answers (2)
  1. 16 September, 08:48
    0
    18 - 7x = - 20.5

    Subtract 18 from each side:

    -7x = - 38.5

    Divide both sides by - 7:

    x = - 38.5 / - 7

    x = - 5.5 = 5 1/2

    The answer is D.
  2. 16 September, 08:58
    0
    D. 5 1/2

    Step-by-step explanation:

    18-7x=-20.5

    Subtract 18 from each side

    18-18-7x=-20.5-18

    -7x = - 38.5

    Divide each side by - 7

    -7x = - 38.5/-7

    x = 5.5

    In fraction form

    x = 5 1/2
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