Step-by-step explanation:
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Here , Multiply H₂ by 3 on left hand side and H₃ by 2 on right hand side to equalize hydrogen atoms.

Here , We have 6 hydrogen atoms in both sides. How about Nitrogen atoms? We have 2 Nitrogen atoms in both sides. And yippie !! We got the balanced equation where both the hydrogen and nitrogen atoms are equal.
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