Test: Adding Integers BLUE

a) $\displaystyle 7-9=$ b) $\displaystyle -3+6= $ c) $\displaystyle +4+6= $ d) $\displaystyle -6-6= $ e) $\displaystyle (-3)+(-5)= $ f) $\displaystyle (+9)-(-7)= $ g) $\displaystyle (-1)-(+9)= $ h) $\displaystyle 8-6 +4= $ i) $\displaystyle -3+7 -4= $ j) $\displaystyle 8+(3-5)= $ k) $\displaystyle 5-(1-3-8)= $ l) $\displaystyle 5+[6-(4-7)]= $ m) $\displaystyle 8-[2-(7-5)]= $ n) $\displaystyle (-9)+[7+(6-2)-(3-6)]= $