-15/16 (4c-2/3d)-5/8 (16d+1/5k)+3/4 (-12c+1/3k)
-15/16(4с-2/3d)-5/8(16d+1/5k)+3/4(-12c+1/3k)=-15/4c+5/8d-10d-1/8k-9/4c+1/4k=-24/4c+(5/8d-80/8d)+(1/4k-1/8k)=6c-75/8d+(2/8k-1/8k)=6c-9 3/8d+1/8k