Compound fraction

A Compound fraction, also called a complex fraction (although it has no relation to complex numbers), is a fraction whose numerator and/or denominator is not a whole number. One example of a compound fraction is Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \frac{\tfrac{8}{9}}{\tfrac{6}{7}} .} They can be simplified by multipling the numerator by the reciprocal of the denominator. Example: Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \frac{\tfrac{7}{5}}{\tfrac{4}{5}}} can be simplified by: Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \tfrac{7}{5}\times\tfrac{5}{4}=\tfrac{7}{4}.}