Answer: p(m)-n=x
Step-by-step explanation: Ok m is side one and n+x/p is side two.
1. You multiply p on both sides to move p to the other side. p x m=n+x/p x p making it p(m)=n+x
2. now you subtract n from both sides making it p(m)-n=x
I don't know how to explain it properly but I know this is right