Ответ:\(3(x+4)=3x+12\).\(5(a-2)=5a-10\).\(2(3y+1)=6y+2\).\(4(m-3)=4m-12\).\(6(2p-5)=12p-30\).Ответ: \(3x+12;\ 5a-10;\ 6y+2;\ 4m-12;\ 12p-30\).