Question

8 1/2-3 1/2:( 2 1/2+1 3/4)*2 3/7

Answer 1

$8 frac{1}{2} - 3 frac{1}{2} div (2 frac{1}{2} + 1 frac{3}{4} ) times 2 frac{3}{7} = frac{17}{2} - frac{7}{2} div ( frac{5}{2} + frac{7}{4} ) times frac{17}{7} = frac{17}{2} - frac{7}{2} div ( frac{10}{4} + frac{7}{4} ) times frac{17}{7} = frac{17}{2} - frac{7}{2} div frac{17}{4} times frac{17}{7} = frac{17}{2} - frac{7}{2} times frac{4}{17} times frac{17}{7} = frac{17}{2} - 2 = frac{17}{2} - frac{4}{2} = frac{13}{2} = 6frac{1}{2}$