Question

Plssssss dau coroană . xoxo ;)

Answer 1

$(- \frac{7}{10} ):(+ \frac{14}{15})-(- \frac{1}{30})$·$\frac{5}{2}$=$- \frac{7}{10}$·$\frac{15}{14}+ \frac{1}{30}* \frac{5}{2}=$

se simplifica in prima 14 si 7 prin 7 si 10, 15 prin 5 si 10 si 14 prin 2, in a 2-a 30 si 5 prin 
[tex]= \frac{1}{3}+ \frac{1}{12} = [/tex]
se amplifica prima cu 4
$= \frac{4}{12} + \frac{1}{12} = \frac{5}{12}$

Answer 2

= (-$\frac{7}{10})* \frac{15}{14} - (- \frac{1}{30}) * \frac{5}{2} = - \frac{3}{4} + \frac{1}{12} = \frac{-9+1}{12} = - \frac{8}{12} = - 0,(6)$