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29 September, 07:57

In which question is r = - 17 a solution?

A) 3 - 2r/4 = 10

B) 3/4 - 2r = 10

C) 3 (r - 4) = 10

D) 3 - r/4 = 10

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Answers (1)
  1. 29 September, 08:18
    0
    None

    Step-by-step explanation:

    For option A

    3-2r/4=10 and combining like terms and re-arranging we obtain

    -2r/4=10-3

    -2r/4=7

    r=7*4/-2=-14

    For option B

    3/4-2r=10 then combining like terms and re-arranging

    -2r=10-3/4

    -2r=9 1/4

    r = (9 1/4) / -2=-4.625

    For option C

    3 (r-4) = 10 dividing both sides by three first

    r-4=10/3

    r=10/3+4 = 7 1/3

    For option D

    3-r/4=10

    -r/4=10-3

    -r/4=7

    r=7*-4=-28

    Therefore, none of the options yields r=-17
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