_9-1_=64

The equation you've written, \( 9 - 1 = 64 \), is incorrect as it stands. The left side, \( 9 - 1 \), equals \( 8 \), not \( 64 \).

If you're looking for a way or a riddle where it might appear as though there's validity to it, please provide more context, and I'd be happy to help! Otherwise, if this is meant to solve for a different situation, please clarify!