Respuesta :

[tex]\frac{a-b}{c-d}[/tex]

start replacing the letters with the corresponding number

[tex]\frac{7-3}{9-1}[/tex]

simplify both numerator and denominator

[tex]\frac{4}{8}[/tex]

divide both numerator and denominator by 4

[tex]\frac{1}{2}=0.5[/tex]

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