Solve for x. 7(x - 3) = 4(x + 5)

1 answer:

3 0

   7(x - 3) = 4(x + 5)
7(x) - 7(3) = 4(x) + 4(5)
   7x - 21 = 4x + 20
- 4x    - 4x
   3x - 21 = 20
   + 21 + 21
      3x = 41
   3 3
      x = 13²/₃

   9(x - 2) = 18
9(x) - 9(2) = 18
   9x - 18 = 18
       + 18 + 18
      9x = 36
   9 9
      x = 4

17x - 6 + 3x - 5 = x + 11 + 4x
17x + 3x - 6 - 5 = x + 4x + 11
   21x - 11 = 5x + 11
   - 5x    - 5x
   16x - 11 = 11
   + 11 + 11
      16x = 22
   16    16
      x = 1³/₈

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