\(\dfrac{7}{8}=\dfrac{49}{56};\dfrac{8}{7}=\dfrac{64}{56}\)
\(\dfrac{49}{56}\);\(\dfrac{64}{56}\)
\(\dfrac{7\times7}{8\times7}=\dfrac{49}{56};\dfrac{8\times8}{7\times8}=\dfrac{64}{56}\)
\(\dfrac{7}{8}=\dfrac{7x7}{8x7}=\dfrac{49}{56}\)
\(\dfrac{8}{7}=\dfrac{8x8}{7x8}=\dfrac{64}{56}\)