Algebra is just like puzzles you might play but using numbers, letters and symbols. You start with all the pieces and you have to put them together to end up with the complete picture. It’s a way of working with numbers and symbols to answer mathematical questions. You use algebra in life all the time without probably realizing it. Algebra answers questions like – If I have $28.50 and need $60 to buy a new computer game, how much more money do I need?  Remember this kind of problem in your early years at school,      + 8 = 10, where you had to figure out what number went into the box to make it a true statement. Solving equations using algebra is no different from these simple problems. Instead of using a box, algebra uses a letter to represent a number. If it’s easy you might be able to see the answer right away but when equations become more complicated you need a process to follow to help get the correct answer. That’s when algebra comes in handy. It’s a powerful tool for solving problems. Algebra gives mathematicians, scientists, engineers, economists and even you, strategies to work out solutions to many tasks.

 

 

Answers

 

  1. A variable
  2. x = 3
  3. 71
  4. x = 23 y = 12 z = 5
  5. z = 26
  6. x = 7
  7. x = 2
  8. x = 19
  9. x = 800
  10. 4x + (7 x 2) = 66 * 4x is four wheels on each car
    4x + 14 = 66
    4x +14 – 14 = 66 – 14
    4x = 66 – 14
    x = 52 / 4
    x = 13