Verified Answer :

\(a) \\ \\ \frac{2}{4} = \frac{N}{12} \\ \\ 24=4N \\ \\ N=6 \\ \\ b) \\ \\ \frac{6}{10} = \frac{12}{N} \\ \\ 6N=120 \\ \\ N=20 \\ \\ \\ \framebox[1.1\width]{Succes !} \par\)

\(\frac{2}{4} = \frac{n}{12}\)

\(12 * \frac{2}{4} = \frac{n}{12} * 12\)

\(6 = n\)


\(\frac{6}{10} = \frac{12}{n}\)

\(\frac{1}{12} * \frac{6}{10} = \frac{12}{n} * \frac{1}{12}\)

\(20 = n\)