Balance the following skeleton equation :
`Mg_(3)N_(2)+H_(2)OrarrMg(OH)_(2)+NH_(3)`.

Explanation

To balance the skeleton equation `Mg_(3)N_(2) + H_(2)O → Mg(OH)_(2) + NH_(3)`, we will follow these steps:

### Step 1: Write down the unbalanced equation
The unbalanced equation is:
\[ \text{Mg}_3\text{N}_2 + \text{H}_2\text{O} \rightarrow \text{Mg(OH)}_2 + \text{NH}_3 \]

### Step 2: Count the number of atoms of each element on both sides
- **Reactants:**
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