Respuesta :

ghanami
hello : 
s=(-3,2) and t= (-9,-4),
6s = (-3×6 , 2×6 ) = (-18 , 12)
s+t = ( -3-9 , 2-4 ) = (-12,-2)
Ilyes39
6s=(-18,12), and t+s=(-12,-2).