Answer:
[tex]-2\frac{1}{10}[/tex]
Step-by-step explanation:
The expression given can be rewritten as:
[tex]-\frac {4}{10}-x-\frac {9}{10}[/tex]
Because +(-n) is just -n. Then, combine like terms to get:
[tex]-\frac{13}{10}-x[/tex]
Substitute [tex]\frac{4}{5}[/tex] for x to get:
[tex]-\frac{13}{10}-\frac{4}{5}[/tex]
Which can be rewritten as:
[tex]-\frac{13}{10}-\frac{8}{10}[/tex]
Which is:
[tex]-\frac{21}{10}[/tex]. [tex]-2\frac{1}{10}[/tex] as a mixed number
Hope this helps :)
