7p-(3p+4)=-2(2p-1)+10
7p-(3p+4)=-2(2p-1)+107p-3p-4=-4p+2+10collect the like terms7p-3p+4p=2+10+48p=16p=2
7p-3p-4=-4p+2+104p-4=-4p+128p=16p=2
