Срочно помогите надо позарез срочно

б) [latex]1 \frac{4}{11} : 1 \frac{2}{13} = \frac{15}{11} : \frac{15}{13} = \frac{15*13}{11*15} = \frac{13}{11} = 1 \frac{2}{11} [/latex] в) [latex]2 \frac{3}{4} :1 \frac{3}{8} * 3 \frac{2}{7} = \frac{11}{4} : \frac{11}{8} * \frac{23}{7} = \frac{11*8}{4*11} = \frac{8*23}{4*7} = \frac{2*23}{7} = \frac{46}{7} = 6 \frac{4}{7} [/latex]