Atrain left main street at 2: 30 pm it arrived at the next stop at 3: 02 pm how long did the train take to reach the stop

You can do subtraction of times.

    3:02
-   2:30


Borrow 1 hour from the 3 in 3:02. 1 hour is 60 minutes, so borrow an hour from 3, and add 60 minutes to 2. Then subtract minutes from minutes and hours from hours.

    2:62
-   2:30

    0:32

32 minutes.

You can also just think like this.
From 2:30 pm to 3:00 pm it's 30 minutes.
From 3:00 pm to 3:02 pm it's 2 minutes.
Add 30 minutes and 2 minutes, and you get 32 minutes.

32 minutes

You move the constant to the right side and change its sign to be 9z= -6 -8. that’s the first step.the second step would be calculate the difference of -8-6 to get -14. you equation should now be 9z=-14the last step is to divide both sides by 9 to get z=-14/9hope this