Respuesta :

HayabusaBrainly

>> Answer

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[tex] \ \:[/tex]

  • [tex] \sf{| \frac{7}{4} \frac{9}{3} | = a}[/tex]

[tex] \sf \: |a| = ad - bc[/tex]

[tex] \sf\: |a| = (7 \times 3) - (9 \times 4)[/tex]

[tex] \sf \: |a| = 21 - 36[/tex]

[tex] \sf \: |a| = \bold{ \blue{ - 15}}[/tex]