Answer:
[tex]209 \frac{3}{4} - {3}^{2} \times (8 {}^{2} - 38 \frac{1}{2} ) \\ = 209 \frac{3}{4} - 3 {}^{2} \times 25 \frac{1}{2} \\ = 209 \frac{3}{4} - 229 \frac{1}{2} \\ = - 19 \frac{3}{4} [/tex]
