1. \(x=3\)
  2. \(x=-3\)
  3. \(x=-\frac{3}{5}\)
  4. \(x=18\)
  5. The number is \(3\).
  6. Each segment will be \(8\) meters long.
  7. There are \(34\) rabbits and \(66\) chickens.
  8. I have \(60\) books.
  9. Lisa's speed was \(20\) kilometers per hour.
  10. It took Jerry \(1\) hour to run from home to school.
  11. Gary's average speed was \(\frac{480}{7}\) kilometers per hour.