Question

раскройте скобки                   2р-(3р-(2р-с))

Answer 1

2p-(3p-(2p-c)) = 2p-(3p-2p+c) = 2p-3p+2p-c = 4p - 3p - c = p-c

Answer 2

= 2p-(3p-2p+c)=2p-3p+2p-c=p-c