Get One Hundred
9 8 7 6 5 4 3 2 1 = 1 0 0
Add +, +, +, – anywhere above in order to get a valid equality.
SOLUTION
The answer is:
9 8-7 6+5 4+3+2 1 = 1 0 0
We do not know where this puzzle originated from. If you have any information, please let us know via email.