Subtraction with renaming estimate 2 1/6- 1 2/7

13/6-9/7
Find the Least Common Denominator (LCD)
In this case, 42.
(7/7)(13/6)-(6/6)(9/7)
37/42 is your answer

You'd know where the clock hands point because the small hand represents the hours. And the large hand represents the minutes, which counts by 5. Since the small hand is on two that gives you 2 hours. And the large hand; its on 10, you'd multiply it by 5, which gives you 50 minutes. In digital form, its written like this : 2:50.