Answer :
[tex] \frac{42in.}{1} \frac{1ft.}{12in.} [/tex]
The inches cancel
[tex] \frac{42}{1} \frac{1ft.}{12}= \frac{42}{12} ft.[/tex]
Than reduce to get 3.5ft.
The inches cancel
[tex] \frac{42}{1} \frac{1ft.}{12}= \frac{42}{12} ft.[/tex]
Than reduce to get 3.5ft.