Answer:
[tex]=5x-9[/tex]
Step-by-step explanation:
[tex]-\left(-5x+9\right)[/tex]
[tex]Distribute\: parentheses[/tex]
[tex]=-\left(-5x\right)-\left(9\right)[/tex]
[tex]Apply\:minus-plus\:rules[/tex]
[tex]-\left(-a\right)=a,\:\:\:-\left(a\right)=-a[/tex]
[tex]=5x-9[/tex]