ПОЖАЛУЙСТА, ПОМОГИТЕ. Сравните дроби и запишите результат сравнения с помощью знаков меньше , больше , =. В каждом случае расскажите, какими способами вы действовали: а) 4/5 и 7/10 в) 5/6 и 7/8 б) 5/12 и 7/18 г) 3/8 и 6/16 д...

[latex] a)\dfrac{4}{5}\ \ \ and\ \ \ \dfrac{7}{10}\\\dfrac{4}{5}=\dfrac{8}{10};\ \ \dfrac{8}{10}\ \textgreater \ \dfrac{7}{10}\to \dfrac{4}{5}\ \textgreater \ \dfrac{7}{10} \\b) \dfrac{5}{12}\ \ \ and\ \ \dfrac{7}{18}\\\dfrac{5}{12}=\dfrac{15}{36};\ \ \dfrac{7}{18}=\dfrac{14}{36};\ \dfrac{15}{36}\ \textgreater \ \dfrac{14}{36}\to\dfrac{5}{12}\ \textgreater \ \dfrac{7}{18}\\c)\dfrac{5}{6}\ \ and \ \ \dfrac{7}{8}\\ \dfrac{5}{6}= \dfrac{20}{24}\ \ ; \dfrac{7}{8}=\dfrac{21}{24}\ ; \dfrac{20}{24}\ \textless \ \dfrac{21}{24}\to \dfrac{5}{6}\ \textless \ \dfrac{7}{8} [/latex] [latex]d)\dfrac{3}{8}\ \ and\ \ \dfrac{6}{16}\\ \dfrac{6}{16}=\dfrac{2*8}{8*2}= \dfrac{3}{8}\ ;\dfrac{3}{8}= \dfrac{3}{8}\to\dfrac{3}{8}=\dfrac{6}{16}\\e)\dfrac{9}{8}\ \ and\ \ 1 \dfrac{1}{8}\\ 1\dfrac{1}{8}=\dfrac{9}{8}\ \ ;\dfrac{9}{8}=\dfrac{9}{8}\to\dfrac{9}{8}=1 \dfrac{1}{8}\\f) 1\dfrac{8}{20}\ \ and \ \ 1\dfrac{2}{9}\\ 1\dfrac{8}{20}=\dfrac{28}{20}=\dfrac{7}{5}=\dfrac{63}{45} \ ; 1\dfrac{2}{9}= \dfrac{11}{9}=\dfrac{55}{45}\ ; \dfrac{63}{45}\ \textgreater \ \dfrac{55}{45}\to1\dfrac{8}{20}\ \textgreater \ 1 \dfrac{2}{9} [/latex] [latex]g) \dfrac{5}{9}\ \ and\ \ \dfrac{9}{5}\\ \dfrac{5}{9}=\dfrac{25}{45}\ ;\ \dfrac{9}{5}= \dfrac{81}{45}\ ;\ \dfrac{25}{45}\ \textless \ \dfrac{81}{45}\to\dfrac{5}{9}\ \textless \ \dfrac{9}{5}\\h) \dfrac{12}{11} \ and\ \dfrac{11}{12}\\\dfrac{12}{11}=\dfrac{144}{132}\ ;\ \dfrac{11}{12}=\dfrac{121}{132}\ ;\ \dfrac{144}{132}\ \textgreater \ \dfrac{121}{132}\to\dfrac{12}{11}\ \textgreater \ \dfrac{11}{12} [/latex]