Question

Cat e

$-\frac{a+b}{c}$

?
E $\frac{-a+b}{c}~sau~\frac{-a-b}{c}$

Answer 1

$E\,...\,- \,\frac{a+b}{c}\,=\, \frac{-(a+b)}{c}\,=\frac{-a-b}{c}$

***  Corect este scrierea din varianta a 2-a !