Answer:
[tex]79.01 + n[/tex]
Step-by-step explanation:
we have
[tex]81.56 + n - 2.55[/tex]
Group terms
[tex](81.56-2.55) + n[/tex]
remember that
[tex](81.56-2.55)=(81+0.56)-(2+0.55)[/tex]
[tex]=(81-2)+(0.56-0.55)[/tex]
[tex]=79+0.01[/tex]
[tex]=79.01[/tex]
substitute in the expression
[tex]79.01 + n[/tex]
