Question

[Phạm Hồng Quyên]

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

Answer 1

[doremon]

y = \(=\frac{\frac{2}{3}-\frac{1}{4}+\frac{5}{11}}{\frac{5}{12}+1-\frac{7}{11}}=\frac{3.4.11\left(\frac{2}{3}-\frac{1}{4}+\frac{5}{11}\right)}{3.4.11\left(\frac{5}{12}+1-\frac{7}{11}\right)}=\frac{88-33+60}{55+132-84}=\frac{115}{103}\)