Question

помогите с математикой
1 1/7*2*4/5*3/4
3 3/4*5/12*8/15
1 5/6*8 2/11*4/9
2 1/27*3 1/5*7 4/11

Answer 1

1)$1 frac{1}{7}*2* frac{4}{5}* frac{3}{4}=1 frac{1*2}{7}* frac{16}{20}* frac{15}{20}=1 frac{2}{7} * frac{240}{20}= 1 frac{2}{7}*12=1 frac{2*12}{7}=1 frac{24}{7}=4 frac{3}{7}$
2)$3 frac{3}{4}* frac{5}{12}* frac{8}{15}=3 frac{3}{4}*( frac{5}{12}* frac{8}{15})=3 frac{3}{4}*( frac{30}{60}* frac{48}{60})=3 frac{3}{4}* frac{24}{60}=3 frac{3*24}{4*60}=3 frac{6}{20}$