Explicação passo-a-passo:
[tex]( \dfrac{10}{3} \times \dfrac{1}{2}) - ( \dfrac{12}{7} \times \dfrac{8}{5} ) \div \dfrac{1}{2} [/tex]
[tex] \dfrac{10}{6} - \dfrac{96}{35} \div \dfrac{1}{2} [/tex]
[tex] \dfrac{10}{6} - \dfrac{96}{35} \times \dfrac{2}{1} [/tex]
[tex] \dfrac{10}{6} - \dfrac{192}{35} [/tex]
[tex] \dfrac{10 {}^{ \div 2} }{6 {}^{ \div 2} } - \dfrac{192}{35} [/tex]
[tex] \dfrac{5}{3} - \dfrac{192}{35} [/tex]
[tex] \dfrac{175 - 576}{105} [/tex]
[tex] - \dfrac{401}{105} [/tex]
