Solution:
Given expression is:
[tex]4s + \frac{1}{6}s + 2\frac{3}{5}s[/tex]
We have to simplify by combining the like terms
From given,
[tex]4s + \frac{1}{6}s + 2\frac{3}{5}s[/tex]
Convert the mixed fraction to improper fraction
[tex]4s + \frac{1}{6}s + \frac{13}{5}s[/tex]
Make the denominator same
[tex]\frac{4s \times 30 }{30} + \frac{1s \times 5}{6 \times 5} + \frac{13s \times 6}{5 \times 6}\\\\\frac{120s}{30} + \frac{5s}{30} + \frac{78s}{30}\\\\\frac{203}{30} = 6.7667[/tex]
Thus the solution is 6.7667