Question

решите пожалуйста!!!

Answer 1

3) $(12frac{307}{728} - 4,7 * 2 frac{2}{7}) : (-4,85) = (frac{9043}{728} - frac{47}{10} * frac{16}{7}) : (- frac{97}{20}) =$$(frac{9043}{728} - frac{47}{5} * frac{8}{7}) : (-frac{97}{20}) = (frac{9043}{728} - frac{376}{35}) : (- frac{97}{20}) =$$(frac{45215}{3640} - frac{39104}{3640}) : (- frac{97}{20}) = frac{6111}{3640} : (- frac{97}{20}) = frac{873}{520} * (- frac{20}{97}) = - frac{9}{520} * 20 = - frac{9}{26}$
4) $5,4 * (- frac{5}{18}) - (3 frac{8}{11}) : (- frac{5}{11}) - (-frac{2}{5}) = frac{27}{5} * (- frac{5}{18}) - frac{41}{11} * frac{11}{5} + frac{2}{5} =$$- frac{3}{2} - frac{41}{5} + frac{2}{5} = - frac{15}{10} - frac{82}{10} + frac{4}{10} = frac{71}{10}$
5) $frac{450,9704-48,828:9,75*90,05}{8 frac{2}{5}- 4frac{2}{7}*2frac{1}{4}:8 frac{3}{14}} = frac{450,9704-5,008*90,05}{8 frac{2}{5}- 4frac{2}{7}*2frac{1}{4}:8 frac{3}{14}} =$$frac{450,9704-450,9704}{8 frac{2}{5}- 4frac{2}{7}*2frac{1}{4}:8 frac{3}{14}} = frac{0}{8 frac{2}{5}- 4frac{2}{7}*2frac{1}{4}:8 frac{3}{14}} = 0$