Question

2by5×(-1by9)+(-1by9)×3by4​

Answer 1

$= > \frac{2}{5} \times ( - \frac{1}{9} ) + ( - \frac{1}{9} ) \times \frac{3}{4} \\ = > - \frac{2}{45} - \frac{1}{12} \\ = > \frac{ - 8 - 15}{180} \\ = > - \frac{23}{180}$