Answer:
The value of the expression 5c + cd is 4 .
Step-by-step explanation:
As the expression in the question be.
= 5c + cd
As
\(c = \frac{1}{5}\ and\ d = 15\)
Put in the above expression
\(= \frac{5}{5} + \frac{1\times 15}{5}\)
Than simplify the above expression
Thus
= 1 + 3
Than the value of the expression 5c + cd is 4 .