Question

-8supra5 + 2supra3 • (-9supra4)

Answer 1

-8/5+[-18/12]
⇒-8/5+[-3/2]
⇒-8/5-3/2=-16/10-15/10=-31/10⇒fractie ireductibila[negativa];

Answer 2

$- \frac{8}{5} + \frac{2}{3} *(- \frac{9}{4} )=- \frac{8}{5} +(- \frac{18}{12} )=- \frac{96}{60} + (-\frac{90}{60} )=- \frac{186}{60} =- \frac{31}{10}$