Question

quanto e (-7/9) multiplicado por (-3,9) ? URGENTEE

Answer 1

$-\dfrac{7}{9}\cdot\left(-3,9\right)=$
$-\dfrac{7}{9}\cdot\left(-\dfrac{39}{10}\right)=$
$+\dfrac{7\cdot39}{9\cdot10}=\dfrac{273}{90}=\dfrac{91}{30}$