2/3-5/6×3/5 помогите вычислить?

[tex] \frac{2}{3} - \frac{5}{3*2} * \frac{3}{5} [/tex]=
=[tex] \frac{2}{3} - \frac{1}{2} * \frac{1}{1} = \frac{2}{3} - \frac{1}{2} = \frac{2*2}{3*2}- \frac{1*3}{2*3} = \frac{4-3}{6} = \frac{1}{6} [/tex]