Question

-3/8 . (-4/3) + (-7/10) . 5/7 =
Me ajudem por favor

Answer 1

Olá, tudo bem ?

Veja a resolução abaixo ⇩

$\boxed{\begin{array}{lr} - \frac{3}{8} \times ( - \frac{4}{3}) + ( - \frac{7}{10} ) \times \frac{5}{7 } \\ \\ \: \: \: \: \: \frac{3}{8} \times \frac{4}{3} + ( - \frac{7}{10} ) \times \frac{5}{7} \\ \\ \: \: \: \: \: \: \: \frac{3}{8 } \times \frac{4}{3} - \frac{7}{10} \times \frac{5}{7} \\ \\ \: \: \: \: \: \: \: \frac{1}{8} \times 4 - \frac{7}{10} \times \frac{5}{7} \\ \\ \: \: \: \: \: \: \: \: \: \: \frac{1}{2} - \frac{7}{10} \times \frac{5}{7} \\ \\ \: \: \: \: \: \: \: \: \: \frac{1}{2} - \frac{1}{10} \times 5 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \frac{1}{2} - \frac{1}{2} \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \boxed{\boxed{\red { = 0 }}}{\green{ \: ⇒resposta✓}} \end{array}}$

$\boxed {\purple{espero \: ter \: colaborado, \: bons \: estudos.}}$