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25 March, 03:23

Linear Equations

Solve for x.

7 (x+5) + 4 (x+5) = 6x-6

A. x=5

B. x=-61/17

C. x=-61/5

D. x=21/5

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Answers (1)
  1. 25 March, 05:07
    0
    C. x = - 61/5

    Step-by-step explanation:

    7 (x+5) + 4 (x+5) = 6x-6

    First let's multiply the parenthesis parts.

    7x+35 + 4x+20 = 6x-6

    Combine like terms - combine all the x terms and the number terms. 7x + 4x = 11x, 35+20 = 55

    11x + 55 = 6x - 6

    Subtract 6x from both sides

    5x + 55 = - 6

    Subtract 55 from both sides

    5x = - 61

    x = - 61/5
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