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13 May, 13:31

Solve - 6x + 19 = x-2. Check for extraneous solutions.

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Answers (2)
  1. 13 May, 13:57
    0
    x = 3

    Step-by-step explanation:

    Solve - 6x + 19 = x-2

    Solve for x:

    19 - 6 x = x - 2

    Subtract x from both sides:

    19 + (-6 x - x) = (x - x) - 2

    -6 x - x = - 7 x:

    -7 x + 19 = (x - x) - 2

    x - x = 0:

    19 - 7 x = - 2

    Subtract 19 from both sides:

    (19 - 19) - 7 x = - 19 - 2

    19 - 19 = 0:

    -7 x = - 19 - 2

    -19 - 2 = - 21:

    -7 x = - 21

    Divide both sides of - 7 x = - 21 by - 7:

    (-7 x) / (-7) = (-21) / (-7)

    (-7) / (-7) = 1:

    x = (-21) / (-7)

    The gcd of - 21 and - 7 is - 7, so (-21) / (-7) = (-7*3) / (-7*1) = (-7) / (-7) * 3 = 3:

    Answer: x = 3
  2. 13 May, 14:03
    0
    x=3 one solution

    Step-by-step explanation:

    Let's solve your equation step-by-step.

    -6x+19=x-2

    Step 1: Subtract x from both sides.

    -6x+19-x=x-2-x

    -7x+19=-2

    Step 2: Subtract 19 from both sides.

    -7x+19-19=-2-19

    -7x=-21

    Step 3: Divide both sides by - 7.

    -7x / -7 = - 21 / -7

    x=3
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