Помогите! а) 4 5/8*2. б) (1 5/6-1 1/3)*3. в) 2 5/6*4/15+2 1/6*4/15. г) 3 2/3*1 1/2-1 2/3*1 1/2

а) [latex] \frac{5}{8}*2= \frac{5}{4}*1= \frac{5}4} = 1\frac{1}{4} [/latex] = б)[latex] (\frac{15}{6} - \frac{11}{3}) *3= (\frac{5}{6} - 11)*3= \frac{5}{6} - \frac{11}{11} = \frac{55}{66}- \frac{66}{66} = - \frac{11}{66} = - \frac{1}{6} [/latex] в)[latex]2 \frac{5}{6} * \frac{4}{15} +2 \frac{1}{6} * \frac{4}{15} = \frac{17}{6} * \frac{4}{15} +2 \frac{1}{6} * \frac{4}{15}=\frac{17}{3}* \frac{2}{15} + \frac{3}{3} *\frac{2}{5}=1,332[/latex] г) [latex] \frac{2}{3} * \frac{11}{2} -1 \frac{2}{3} * \frac{11}{2} = \frac{2}{3} * \frac{11}{2} - \frac{5}{3} * \frac{11}{2} = \frac{132}{6} - \frac{66}{6} = \frac{66}{6} =11[/latex]