Anyone know how to balance these?

Question

Al(OH)3=H2SO4--->Al2(So4)3+H2O
Fe+O2--->Fe2O3
C7H6O2+O2--->CO2+H2O
H2SO4+HI--->H2S+I2+H2O
FeS2+O2--->Fe2O3+SO2
Al+FeO--->Al2O3+Fe
Fe2O3+H2--->Fe+H2O
Na2CO3+HCl--->NaCl+H2O+CO2
K+Br2--->KBr
C2H2+O2--->CO2+H2O

GODS GOT A BLESSING! WITH YOUR NAMES ON IT!
=]
THANKS SO MUCH, I REALLY NEEDED THE TUTORIAL, THE ANSWERS, AND MOST OF ALL THE HELP.
YOU DON'T KNOW HOW MUCH THIS MEANT TO ME, I FINALLY FINISHED ALL 25... HEADACHE FREE.
THANKS AGAIN =P

Answer 1

I think you have to supply multipliers so elements balance.
I'll mark the ones which I tried with *
Al(OH)3=H2SO4--->Al2(So4)3+H2O
*6Fe+3O2--->2Fe2O3*
C7H6O2+O2--->CO2+H2O
H2SO4+HI--->H2S+I2+H2O
FeS2+O2--->Fe2O3+SO2
*2Al+3FeO--->Al2O3+3Fe*
*Fe2O3+3H2--->2Fe+3H2O*
Na2CO3+HCl--->NaCl+H2O+CO2
*2K+Br2--->2KBr*
C2H2+O2--->CO2+H2O

Answer 2

1)
2Al(OH)3 + 3H2SO4 ->Al2(SO4)3 + 6H2O

2)
4Fe + 3O2 ->2Fe2O3

3)

2C7H6O2 + 15O2-->14CO2 +6H2O

4)
H2SO4 + 8HI ->H2S+4I2 +4H2O

5)
2FeS2 + 7O2->2Fe2O3+4SO2

6)
2Al+6FeO->2Al2O3+6Fe

7)
2Fe2O3 + 6H2->2Fe + 6H2O

8)

Na2CO3+2HCl->2NaCl+H2O+CO2

9)

2K+Br2->2KBr

10)
2C2H2+5O2->4CO2+2H2O