Explicação passo-a-passo:
a)
[tex] 5 \div \frac{1}{4} = \frac{5}{1} \times \frac{4}{1} = \frac{20}{1} = 20 [/tex]
b)
[tex] \frac{5}{8} \div 2 = \frac{5}{8} \div \frac{2}{1} = \frac{5}{8} \times \frac{1}{2} = \frac{5}{16} [/tex]
c)
[tex]1 \div \frac{4}{11} = \frac{1}{1} \times \frac{11}{4} = \frac{11}{4} [/tex]
d)
[tex]0 \div \frac{5}{9} = 0[/tex]
