Test: Adding integers RED

a) $\displaystyle 3-7=$ b) $\displaystyle -5+9= $ c) $\displaystyle +2+5= $ d) $\displaystyle -5-5= $ e) $\displaystyle (-2)+(-8)= $ f) $\displaystyle (+8)-(-4)= $ g) $\displaystyle (-6)-(+4)= $ h) $\displaystyle 9-4 +5= $ i) $\displaystyle -8+3 -5= $ j) $\displaystyle 9+(3-7)= $ k) $\displaystyle 8-(2-3-7)= $ l) $\displaystyle 7+[3-(2-9)]= $ m) $\displaystyle 9-[4-(8-3)]= $ n) $\displaystyle (-7)+[3+(4-7)-(7-8)]= $