Question

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

Answer 1

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