\(\frac{\left(\frac{2}{3}-\frac{1}{4}\right)+\frac{5}{11}}{\frac{5}{12}+\left(1-\frac{7}{11}\right)}=\frac{\frac{5}{12}+\frac{5}{11}}{\frac{5}{12}+\frac{5}{11}}=1\)

\(1\frac57-\frac57\times\frac{2}{11}-\frac57\times\frac{9}{11}\)

=\(\frac57\times\left(1-\frac{2}{11}-\frac{9}{11}\right)\)

=\(\frac57\times\left(\frac{11}{11}-\frac{2}{11}-\frac{9}{11}\right)\)

=\(\frac57\times1\)

=\(\frac57\)

\(\frac{5}{11}\times\frac{18}{29}-\frac{5}{11}\times\frac{8}{29}+\frac{5}{11}\times\frac{19}{26}\)

=\(\frac{5}{11}\times\left(\frac{18}{29}-\frac{8}{29}+\frac{19}{29}\right)\)

=\(\frac{5}{11}\times1\)

=\(\frac{5}{11}\)

Trả lời

\(P=\frac{\frac{2}{3}-\frac{1}{4}+\frac{5}{11}}{\frac{5}{12}+1-\frac{7}{11}}\)

\(\Leftrightarrow P=\frac{\frac{8}{12}-\frac{3}{12}+\frac{5}{11}}{\frac{5}{12}+\frac{12}{12}-\frac{7}{11}}\)

\(\Leftrightarrow P=\frac{\frac{5}{12}+\frac{5}{11}}{\frac{17}{12}-\frac{7}{11}}\)

\(\Leftrightarrow P=\frac{\frac{55}{132}+\frac{60}{132}}{\frac{187}{132}-\frac{84}{132}}\)

\(\Leftrightarrow P=\frac{\frac{115}{132}}{\frac{103}{132}}\)

\(\Leftrightarrow P=\frac{115}{132}\)

\(P=\frac{\frac{2}{3}-\frac{1}{4}+\frac{5}{11}}{\frac{5}{12}+1-\frac{7}{11}}\)

\(\Rightarrow P=\frac{\frac{8}{12}-\frac{3}{12}+\frac{5}{11}}{\frac{5}{12}+\frac{11}{11}-\frac{7}{11}}\)

\(\Rightarrow P=\frac{\frac{5}{12}+\frac{5}{11}}{\frac{5}{12}+\frac{4}{11}}\)

Chúc bạn học tốt !!! 

mn giúp mk nha

mk đang cần gấp

\(\frac37+\frac{5}{13}+\frac{4}{13}\)

=\(\frac37+\left(\frac{5}{13}+\frac{4}{13}\right)\)

=\(\frac37+\frac{9}{13}\)

=\(\frac{39}{91}+\frac{63}{91}\)

=\(\frac{102}{91}\)

\(\left(\frac38+\frac{-3}{4}+\frac{7}{12}\right):\frac56+\frac12\)

=\(\left(\frac{9}{24}+\frac{-18}{24}+\frac{7}{24}\right)\times\frac65+\frac12\)

=\(\frac{5}{24}\times\frac65+\frac12\)

=\(\frac14+\frac12\)

=\(\frac14+\frac24\)

=\(\frac34\)