Here's another one:

-6 - 2 - -3 - -10 =

Rewrite it:

-6 - 2 + 3 + 10 =

Combine some easy stuff:

-6 - 2 + 3 + 10 = -8 + 13 = 5


Your turn:

5 - -2 - 6 + 8 =

10 - 7 - -4 - 12 =

-3 - -5 - -7 + 6 =

-16 - 8 + 9 - -4 =