Answer:
Your correct answer is -81/10
Step-by-step explanation:
[tex]\frac{5}{100}- (8.1 + \frac{5}{100})[/tex]
= [tex]\frac{1}{20} - (8.1 + \frac{5}{100})[/tex]
= [tex]\frac{1}{20} - (8.1 + \frac{1}{20})[/tex]
= [tex]\frac{1}{20} -\frac{163}{20}[/tex]
[tex]=\frac{-81}{10}[/tex]