## Algebra 1: Common Core (15th Edition)

$T'=\{ ...,-2,-1,0\}$
We have $U=\{ ...,-1,0,1,2,..12 \}$ and $T=\{ 1,2,3,...12 \}$ The complement of set T is the set of all elements in the universal set that are not in the set. So $T'=\{ ...,-2,-1,0\}$