-8(k-3)+4(k-2)-2(3k+1)
=-8к+24+4к-8-6к-2=-10к+14
-8(k-3)+4(k-2)-2(3k+1) = -8k +24 +4k -8 -6k -2 = -8k+4k-6k +24-8-2 = -10k+14