MHB Finding the difference of mixed measures

[clhrhrklsr]

How would I work the following problem-19(degrees) 17' 33"
- 7(degrees) 45' 28"Please help asap

 

[MarkFL]

We are given:

$$\begin{array}{r}19^{\circ}\,17^{\prime}\,33^{\prime\prime} \\ -\,\underline{\,\,7^{\circ}\,45^{\prime}\,28^{\prime\prime}}\end{array}$$

If, in the top line, we "borrow" a degree, and add it to the minutes, we have:

$$\begin{array}{r}18^{\circ}\,77^{\prime}\,33^{\prime\prime} \\ -\,\underline{\,\,7^{\circ}\,45^{\prime}\,28^{\prime\prime}}\end{array}$$

Now we can just subtract like terms...can you proceed?