\[\boxed{\mathbf{1111\ (1102)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1) - 1,2pc - 0,2mc + c =\]
\[= - c(1,2p + 0,2m - 1)\]
\[2) - 35ac - 15bc + 20abc =\]
\[= - 5c(7a + 3b - 4ab)\]
\[3) - 6ax - 30ay - 42az =\]
\[= - 6a(x + 5y + 7z)\]
\[4)\ 9mnp + 45mnk - 27mn =\]
\[= 9mn(p + 5k - 3)\]