Question

Дествия со скобками ФОТО

Answer 1

$1.)2: frac{2}3} +3 :4: frac{4}{5} = \ 1)2: frac{2}{3} =2* frac{3}{2} = frac{2*3}{2} = frac{1*3}{1} =3 \ 2)3:4= frac{3}{4} =0.75 \ 3) 0.75: frac{4}{5} =0.75:0.8=0.9375 \ 4)3+0.9375=3.9375$