Explicação passo-a-passo:
[tex]a) \frac{12}{8} \div \frac{4}{4} = \frac{3}{2} [/tex]
[tex]b) \frac{18}{3} = \div \frac{3}{3 } = 6[/tex]
[tex]c) \frac{44}{6} = \div \frac{2}{2} = \frac{22}{3} [/tex]
[tex]d) \frac{100}{12} = \div \frac{4}{4} = \frac{25}{3} [/tex]
