I am guessing you meant 9+10 which is 19
I plugged it into my calculator and I got 1,870.
Answer:
a. <u><em>14:45pm</em></u> (It's really easy to convert to a 24-hour clock time, all you need to do is add 12 hours onto the hour. Eg. 2 + 12 = 14 so it will be 14:45.pm
b. The length of time between 11:45am and 2:45pm is <em><u>3 hours.</u></em>
I don't know what c is sorry.
Hope that helps. x
First you need to simplify the left side of the equation to get

Then you add by two on both sides to get

Finally you divide by 2 on both sides to get