Answer:

58.0125

Step-by-step explanation:

[tex] \frac{7}{13} - \frac{21}{4} [/tex]

[tex] = ( \frac{21}{5} \times \frac{3}{4}) [/tex]

[tex] \frac{284 - 63}{12} [/tex]

[tex] = ( \frac{63}{20} )[/tex]

[tex] \frac{221}{12} \times \frac{63}{20} [/tex]

[tex] = \frac{13923}{240} [/tex]

[tex] = 58.0125[/tex]