(m+n) + (5m-2)

Since it is not specified what is the request of the
problem, we'll simplify the given expression and we'll
get:

We'll remove the
brackets:

m+ n + 5m - 2

We'll
re-arrange the terms and we'll combine like terms:

(m+5m) +
(n-2)

The simplified expression
is:

(m+n) + (5m-2) = 6m + n -
2

If the request of the problem was to
determine m and n, we'll solve the problem:

(m+n) + (5m-2)
=  0+0

We'll put the first bracket as
0:

m + n = 0 (1)

We'll put the
second bracket as zero:

5m - 2 =
0

We'll add 2 both sides:

5m =
2

We'll divide by
5:

m = 5/2
(2)

We'll substitute m in
(1):

5/2 + n = 0

We'll
subtract 5/2 both sides:

n =
-5/2