XO4- (aq) +  Z3+ (aq)=X2+ (aq) + ZO22+ (aq)       Where: X = Metal #1 and Z = Metal #2 (a) the initial oxidation numbers of each atom on both sides of the equation. (b) separate oxidation and reduction 1/2-reactions. (c) the balancing of electrons, atoms, and charge in both 1/2-reactions.

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