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30 April, 20:04

What is the solution to - 2|2.2x - 3.3| = - 6.6?

a. x = - 3

b. x = 3

c. x = - 3 or x = 0

d. x = 0 or x = 3

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Answers (1)
  1. 30 April, 20:58
    0
    Hello,

    Answer D

    1) if 2.2x-3.3>0 then |2.2x-3.3|=2.2x-3.3

    ==>-2 (2.2x-3.3) = - 6.6

    ==>-4.4x=-6.6-6.6

    ==>x=3

    2)

    if 2.2x-3.3<0 then |2.2x-3.3| = - (2.2x-3.3)

    ==>-2 (-2.2x+3.3) = - 6.6

    ==>4.4x=-6.6+6.6

    ==>x=0
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