Answer:
Lissette biked [tex]2\frac{2}{3}\ miles[/tex]
Step-by-step explanation:
Let
x -----> the number of miles Shane biked
y -----> the number of miles Lissette biked
we know that
[tex]x=3y-1[/tex] -----> equation A
[tex]x=7[/tex] ----> equation B
Equate equation A and equation B and solve for y
[tex]3y-1=7\\ 3y=7+1\\ 3y=8\\ y=\frac{8}{3}\ miles[/tex]
Convert to mixed number
[tex]\frac{8}{3}\ miles=\frac{6}{3}+\frac{2}{3}=2\frac{2}{3}\ miles[/tex]
