dear merits,
help me as detailed below:

Cell A
Cell B
Cell C

when i put a value in Cell "B", then Cell "A" will make sum as much as i
put the value in Cell "B". and Cell C's value will minus them.suppose, first
value is 100 in Cell B, Cell A will show 100 and 2nd value 50 in Cell B then
Cell A will show 150.

Thnks in Advance

SA