Respuesta :

a) a+a+a+a+a+a

=(a+a+a+a+a+a)

= 6a

b. 5x-4x+10x

=(5x+−4x+10x)

= 11x

c. 9t+3t-6t

=(9t+3t+−6t)

= 6t

d. -5j+11j+j

=(−5j+11j+j)

= 7j

a)= 6a

b)= 11x

c)=6t

d)= 7j

have a great day!