How can I balance this chemical equation?

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SUMMARY

The chemical equation Al(OH)4-(aq) + H2SO4(aq) → Al(OH)3(s) + H2O + SO42- requires balancing of both mass and charge. The initial attempt at balancing included the formation of 3/2 H2O, but this does not satisfy the charge balance. To achieve a balanced equation, one must account for the loss of hydroxide ions (OH-) from Al(OH)4- and the release of protons (H+) from H2SO4. A systematic approach to balancing both the oxygen and charge is essential.

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Homework Statement
I am to balance the following equation:
Al(OH)41-(aq) + H2SO4(aq) ---> Al(OH)3(s) + H2O + SO42-

The attempt at a solution

Al(OH)41-(aq) + H2SO4(aq) ---> Al(OH)3(s) + 3/2H2O + SO42-

The bolded part above is all I could add to the equation, but I now need to balance the oxygen. This is where I am stuck. Any help is appreciated.
 
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It is not only oxygen, there are more problems with the equation - charge is not balanced.

Al(OH)4- loses OH-, H2SO4 loses 2H+. Try to start from here.

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