Question

помогите плиз!!! там где я обвёл кружком

Answer 1

$- 2 frac{2}{7} + 4 frac{3}{5} = - (2 + frac{2}{7} ) + 4 + frac{3}{5} = - 2 - frac{2}{7} + 4 + frac{3}{5} = ( - 2 + 4) + - frac{2}{7} + frac{3}{5} ) = 2 + frac{11}{35} = 2 frac{11}{35} \ \ frac{5}{12} times ( - 6) = - 2.5 \ \ - 16 div ( - frac{4}{9} ) = 16 times frac{9}{4} = 4 times 9 = 36 \ \ 12 frac{3}{8} - 5 frac{1}{4} + 7 frac{1}{2} = 12 + frac{3}{8} - (5 + frac{1}{4} ) + 7 + frac{1}{2} = 12 + frac{3}{8} - 5 - frac{1}{4} + 7 + frac{1}{2} = (12 - 5 + 7) + ( frac{3}{8} - frac{1}{4} + frac{1}{2} ) = 14 + frac{5}{8} = 14.625 \ \ 1 frac{1}{6} div 2 frac{1}{6} times 26 = frac{7}{6} div frac{13}{6} times 26 = frac{7}{6} times frac{6}{13} times 26 = 7 times 2 = 14$