Question

6. Вычислите:. (-2,5-1 5/6):1 4/9-3 5/9*(-2 1/4)(1,24-9 3/20):2 1/3-(3/4+2 5/8):0,625. СОЧ помогите пожалуйста даю 80 баллов​

Answer 1

$( - 2.5 - 1 \frac{5}{6} ) \div 1 \frac{4}{9} - 3 \frac{5}{9} \times ( - 2 \frac{1}{4} )(1.24 - 9 \frac{3}{20} ) \div 2 \frac{1}{3} - ( \frac{3}{4} + 2 \frac{5}{8} ) \div 0.625 = ( - \frac{5}{2} - \frac{11}{6} ) \times \frac{4}{9} - \frac{32}{9} \times ( - \frac{9}{4} ) \times ( \frac{31}{25} - \frac{183}{20} \div 2 \times \frac{1}{3} - ( \frac{3}{4 } + \frac{21}{8} ) \div \frac{5}{8} = - \frac{13}{3} \times \frac{4}{9} - \frac{32}{9} \times ( - \frac{9}{4} ) \times ( - \frac{791}{100} ) \div 2 \times \frac{1}{3} - \frac{27}{8} \times \frac{8}{5} = - \frac{52}{27} - 8 \times \frac{791}{100} \times \frac{1}{2} \times \frac{1}{3} - 27 \times \frac{1}{5} = - \frac{52}{27} \times 4 \times \frac{791}{100} \times \frac{1}{3} - \frac{27}{5} = - \frac{52}{27} - \frac{791}{25} \times \frac{1}{3} - \frac{27}{5} = - \frac{52}{27} - \frac{791}{75} - \frac{27}{5} = - \frac{ 12064}{675}= - 17\frac{ 589}{675}$