pirates code

    Today in algebra we learned how to find the value of variable x in pirates code. The teacher showed us how to find x with a number line. you have to work backwards and do the inverse operation. So for example, (x+ 20 )- 30) x 10 and so you would have to work backwards. The first thing you would do is to change x 10 to divide 10. Then change  -30 to   + 30. After that you change + 20 to - 20. So you really work backwards to find the variable x.
    At first I really didn't get it because it confused me. After that he showed us a number line to help us with the problem. Then I really understood how to solve the problem.