Let x =( -6, 2, -7 ) and y = ( 6, 10, 1 ) be in \mathbb R^3 . Compute the following:

x + y = ( , ,
)

-6 x= ( , , )

x - y = ( , , )

-6x + 8 y = ( , , )

-6

You can earn partial credit on this problem.