Math equation quiz

Question or Hint Answer or Word
  1. x+5=6 (wrong answers: 5, 0, 1, 4.5)
  2. x+4=-100-x (wrong answers: 0, -52, 100, -70)
  3. x-5+5x-9+89=8+75x (wrong answers: 67/69, 67, 0, x)
  4. 420x=40x (wrong answers: 0, 40, 25, 6)
  5. 3x=9+2x (wrong answers: 87, 9, 3/2, 5)

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