cara dan hasilnya berapa...????

[tex] \frac{5 + 3}{56} = \frac{5 - 3}{x} \\ \\ \frac{8}{56} = \frac{2}{x} \\ \\ 8x = 56 \times 2 \\ \\ x = \frac{56 \times 2}{8} \\ \\ x = 7 \times 2 \\ \\ x = 14[/tex]