The measure of angle B can NOT be determined as it must give the length of the third side, or one angle in the triangle at least.
The sum of the other 2 sides must be greater than 13.
I basically solved for x first.
42+43x+1=180
X=3.2 rounded
Next plug in the value of x into the EDC equation
43(3.2)+1=138.6
Then add it to the measure of EDN
138.6+42= 180.6
So the answer is measure of NDC= 138.6