Question

49 pe 91 -1=?

dau coroana

Answer 1

$\frac{49}{91} -1$    aducem la numitorul comun, adica 91 si obtinem.
$\frac{49-91}{91}= \frac{-42}{91}$= >$\frac{-6}{13}$

Answer 2

49/91=7·7/13·7=7/13
7/13-1=(7-13)/13=-6/13