Solve for C: S = C + RC.

Question

Solve for the indicated variable.

Answer 1

S = C + RC

S = C(1+R)

S/(1+R) = C

check:

Let C = 1 and R=2

Then S = C + RC = 1 + 2*1 = 1 + 2 = 3

The answer says C = S/(1+R) = 3/(1+2) = 3/3 = 1 = C