Answer:
Step-by-step explanation:
We can write ratios as fraction. So, write the ratios in fraction for, then solve.
[tex]\frac{6}{12}=\frac{3}{N}\\6N=(12)(3)\\6N=36\\\frac{6N}{6}=\frac{36}{6}\\\boxed{\boldsymbol{N=6}}[/tex]
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