c+3c=16 What does c equel ;:–/

c = 4 because 3*4= 12 and 12+4= 16

Let's simplify the left side of the equal-sign:

\(c+3c = 4c\)

Combined;

\(4c=16\)

\(\frac{4c}{4} = c = \frac{16}{4} = 4\)