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Viktor [21]
2 years ago
8

What is the solution to this equation? 9x - 4(x - 2) = x + 20

Mathematics
1 answer:
ioda2 years ago
7 0

9x - 4(x - 2) =x + 20

We move all terms to the left:

  • 9x -4(x - 2) - (x + 20) = 0

Multiply

  • 9x - 4x -(x + 20) + 8 = 0

We get rid of the parentheses.

  • 9x - 4x - x - 20 + 8 = 0

We add all the numbers and all the variables.

  • 4x - 12 = 0

We move all terms containing x to the left hand side, all other terms to the right hand side

  • 4x=12
  • x = 12/4
  • x = 3
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