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24 October, 19:58

Solve the linear equation. 2 (x 6) 6 = 3 (x 5) 7

a. {6}

b. {-4}

c. {12}

d. {9}

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Answers (1)
  1. 24 October, 23:35
    0
    2 (x+6) + 6 = 3 (x+5) + 7

    2 (6=x) + 6 = 3 (5+x) + 7

    (6*2+x*2) + 6 = (3*x+x*3)

    (12+2x) + 6 = (3*x+5) + 7

    12+6+2x = 3 (x+5) + 7

    12+6-18

    18+2x = 3 (x+5) + 7

    18+2x = 3x+15+7

    18+2x=3x+22

    -2x - 2x

    18=x+22

    -22 - 22

    -4=x
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