Can you please balance these equations? and if you can do it using the algebraic method? (plz help)

1. H2S + H3AsO4 ------> As2S3 + S + H2O
2. H2S + H3AsO4 ------> As2S3 + S + H2O
3. Ca10F2(PO4)6 + H2SO4 ----------> Ca(H2PO4)2 + CaSO4 + HF
thanks a lot this is been taking me forever and i can't do it <3

You obviously didn't even bother try them in the first place, otherwise you would have know 1 and 2 are the same.

5H2S + 2H3AsO4 ------> As2S3 + 2S + 8H2O

Ca10F2(PO4)6 + 7H2SO4 --> 3Ca(H2PO4)2 + 7CaSO4 + 2HF