P = R - C for C

Question

i need help badly , dont understand how to this at all . ! please help 

Answer 1

It is not Clear What you are asking:

 

 It is presumed that  Solve for C  

 

    if           P = R - c

 

               You Simply Subtract P from both sides and add C to both Sides.

 

               P -P + C = R - P - C + C

 

                C = R - P