sai đầu bài ak bn tự nhiên lại có chữ và ????????
\(A=\left(6\text{ : }\frac{3}{5}-1\frac{1}{6}\text{ x }\frac{6}{7}\right)\text{ : }\left(4\frac{1}{5}\text{ x }\frac{10}{11}+5\frac{2}{11}\right)\)
\(A=\left(6\text{ : }\frac{3}{5}-\frac{7}{6}\text{ x }\frac{6}{7}\right)\text{ : }\left(\frac{21}{5}\text{ x }\frac{10}{11}+\frac{57}{11}\right)\)
\(A=\left(10-1\right)\text{ : }\left(\frac{42}{11}+\frac{57}{11}\right)\)
\(A=9\text{ : }9\)
\(A=1\)
\(A=\left(6\div\frac{3}{5}-1\frac{1}{6}\times\frac{6}{7}\right)\div\left(4\frac{1}{5}\times\frac{10}{11}+5\frac{2}{11}\right)\)
\(A=\left(10-\frac{7}{6}\times\frac{6}{7}\right)\div\left(\frac{21}{5}\times\frac{10}{11}+\frac{57}{11}\right)\)
\(A=\left(10-1\right)\div\left(\frac{42}{11}+\frac{57}{11}\right)\)
\(A=9\div\left(\frac{99}{11}\right)\)
\(A=9\div9\)
\(A=1\)
