BCD Subtraction of two negative numbers?

Question

I just learned how to subtract a smaller BCD number from a large number and vice versa. For example; I can compute +27+(-14) , +14+-(27). Now I am confused as to how to do (-27)+(-14). Can somene please help. I'm using 10's complement.

Answer 1

Well, $(-27)+(-14)=-(27+14)$.