Have I balanced this right

Question

Al2Se3 + 6 H2O ==> 2 Al(OH)3 + 3 H2Se

Let me give you a hint on these, write water as HOH, and it balances faster. Treat the OH as a group.

Al2Se3 + 6 H(OH) ==> 2 Al(OH)3 + 3 H2Se

Yes, it is balanced: see the six H on each side, and the six OH on each side..