[tex] \frac{n}{2} = \frac{8}{n} \\ n \times n = 8 \times 2 \\ {n}^{2} = 16 \\ n = \sqrt{16} \\ n = 4[/tex]
[tex] \frac{12}{n} = \frac{n}{3} \\ n \times n = 12 \times 3 \\ {n}^{2} = 36 \\ n = \sqrt{36} \\ n = 6[/tex]
[tex] \frac{3n}{5} = \frac{15}{n} \\ 3n \times n = 15 \times 5 \\ 3 {n}^{2} = 75 \\ {n}^{2} = 75 \div 3 \\ {n}^{2} = 25 \\ n = \sqrt{25} \\ n = 5[/tex]
[tex] \frac{2n}{7} = \frac{14}{n} \\ 2n \times n = 14 \times 7 \\ n \times n = 14 \times 7 \div 2 \\ {n}^{2} = 7 \times 7 \\ {n}^{2} = 49 \\ n = \sqrt{49} \\ n = 7[/tex]
[tex] \frac{n}{20} = \frac{5}{n} \\ n \times n = 20 \times 5 \\ {n}^{2} = 100 \\ n = \sqrt{100} \\ n = 10[/tex]
[tex] \frac{n}{3} = \frac{3}{n} \\ n \times n = 3 \times 3 \\ {n}^{2} = 9 \\ n = \sqrt{9} \\ n = 3[/tex]
[tex] \frac{n}{100} = \frac{1}{n} \\ n \times n = 100 \times 1 \\ {n}^{2} = 100 \\ n = \sqrt{100} \\ n = 10[/tex]
[tex] \frac{3n}{2} = \frac{96}{ {n}^{2} } \\ 3n \times {n}^{2} = 96 \times 2 \\ {n}^{3} = 96 \times 2 \div 3 \\ {n}^{3} = 64 \\ n = 2 \sqrt{2} [/tex]
