Respuesta :

5u + u - 6u
= 6u - 6u
= 0

Answer:

0

Step-by-step explanation:

Like terms are terms that have the same variable part.

The variable part of all three terms is u, so all terms are like terms.

5u + u - 6u =

= 5u + 1u  6u

= 6u - 6u

= 0