Question

Calculați :-9supra10-(-4supra 15) =.

Answer 1

Răspuns:

$\frac{9}{10} - ( - \frac{4}{15} ) =$

$= \frac{9}{10} + \frac{4}{15} =$

Inmultim prima fractie cu 3, iar a doua cu 2 =>

$= \frac{27}{30} + \frac{8}{30} =$

$= \frac{27 + 8}{30} =$

$=\frac{35}{30}$

Simplificam fractia cu 5=>

$= \frac{7}{6} =$

= 1,1(6)