Question

-u + 3 = –4 solve and please explain

Answer 1

\[-u + 3 = -4\]
subtract three from both sides:
\[-u = -7\]
so:

Answer 2

\[u = 7\]

Answer 3

remember, it's an equation, whatever you do to one side, you must have to do the same to the other side of the equation

Answer 4

otherwise, they're not equal

Answer 5

thanks so much!