5целых 2/3+2целых 1/4-1целая 1/5

[latex]5 \frac{2}{3} +2 \frac{1}{4} -1 \frac{1}{5} = \frac{17}{3} + \frac{9}{4} - \frac{6}{5} = \frac{340+135-72}{60} = \frac{403}{60} =6 \frac{43}{60} [/latex]