6/11×3/4+-12/60+-3/4×-5/11

`\frac{6}{11} * \frac{3}{4} + -\frac{12}{60} + -\frac{3}{4} * -\frac{5}{11}`

`=\frac{6}{11} * \frac{3}{4} + -\frac{12}{60} + \frac{3}{4} * \frac{5}{11}`

`= \frac{3}{4} * (\frac{6}{11} + \frac{5}{11}) + -\frac{12}{60}`

`=\frac{3}{4} + -\frac{12}{60}`

`=\frac{45}{60} + -\frac{12}{60}`

`=\frac{33}{60}`

`=\frac{11}{20}`

`#doituyent oanhuyen`