Question

Stie cineva cum se rezolva ex:65

Answer 1

a) ($\frac{149}{12}$+$\frac{5}{3}$-$\frac{23}{6}$+$\frac{11}{4}$):($\frac{5}{2}$-$\frac{2}{5}$-$\frac{7}{9}$)=($\frac{149+20-46+33}{12}$):($\frac{225-36-70}{90}$=$\frac{156}{12}: \frac{119}{90}= \frac{156}{12} * \frac{90}{119}= [tex] \frac{2340}{238}$
b)$(\frac{12}{5}* \frac{91}{15}+ \frac{8}{7}- \frac{112}{73}) * ( \frac{40}{7}- \frac{81}{16})$=$(\frac{12}{5}* \frac{15}{91}+ \frac{8}{7}- \frac{112}{73})( \frac{640-567}{112}=( \frac{196}{4650}* \frac{73}{112}= \frac{49}{17836}= \frac{1}{364}$