Complete the Following $\frac { 5 } { 4 } + \frac { - 1 } { 2 } =$

Essay

Complete the following. For each subtraction problem, first rewrite it as an addition problem.
A) ^-7 + ^-8 =
B) 3 + ^-5 =
C) 16 + ^-14 =
D) ^-21 + ^-2 =
E) 17 - ^-3 =
F) ^-2 - ^-5 =
G) ^-13 - 9 =
H) 14 - ^-16 =
I) $\frac { 5 } { 4 } + \frac { - 1 } { 2 } =$
J) $\frac { 11 } { 17 } + \left( - \frac { 11 } { 17 } \right) =$
K) ^-2.6 - 4.5 =
L) ^-3.17 - 2.4 =