Question

помогите пожалуйста умоляю срочно

Answer 1

$1)b = 1.55 times frac{25}{31} + 3 frac{29}{30} div 0.4 = frac{155 times 25}{100 times 31 } + frac{119}{30} div frac{4}{10} = frac{5 times 1}{4 times 1} + frac{119 times 10}{30 times 4} = 1 frac{1}{4} + frac{119}{12} = 1 frac{1}{4} + 9 frac{11}{12} = 1 frac{3}{12} + 9 frac{11}{12} = 10 frac{14}{12} = 10 frac{7}{6} = 11 frac{1}{6}$
Следовательно -в=-11 1/6
2)
$(13 frac{1}{32} - 9 frac{9}{16} ) div 27.75 + 1.375 = (12 frac{33}{32} - 9 frac{18}{32} ) div 27.75 + 1.375 = 3 frac{15}{32} div frac{2775}{100} + 1.375 = frac{111 times 100}{32 times 2775} + 1.375 = frac{1}{8} + 1.375 = 0.125 + 1.375 = 1.5$
Следовательно в=-1.5