Respuesta :

Answer:

u = -5

Step-by-step explanation:

Step one: subtract 6u from both sides.

3u - 8 - 6u = 6u + 7 - 6u

-3u - 8 = 7

Step two: add 8 to both sides.

-3u - 8 + 8 = 7 + 8

-3u = 15

Step three: divide both sides by -3.

-3u/-3 = 15/-3

u = -5