Question

срочно!!!!!!помогите!!!!

Answer 1

$frac{1}{3} times ( - 2 frac{3}{4} ) div (5 frac{1}{2} ) + 2 frac{2}{5} div ( - 1 frac{11}{15} ) = frac{1}{3} times ( - frac{11}{4} ) div frac{11}{2} + frac{12}{5} div ( - frac{26}{15} ) = - frac{11 times 2}{3 times 4 times 11} - frac{12 times 15}{5 times 26} = - frac{1}{6} - frac{6 times 3}{13} = - frac{1}{6} - 1 frac{5}{13} = - 1frac{13 + 30}{78} = - 1 frac{43}{78}$