Question

0,8/1-1/9 помогите и распишите

Answer 1

$frac{0.8}{1} - frac{1}{9} = frac{8}{10}^{(9} - frac{1}{9}^{(10} = frac{8*9}{10*9}- frac{1*10}{9*10}= frac{72}{90}- frac{10}{90}= frac{72-10}{90}= frac{62}{90}= frac{31}{45}$


$frac{0,8}{1- frac{1}{9} } = frac{0,8}{ frac{9}{9}- frac{1}{9} }= frac{0,8}{ frac{8}{9} } =0,8: frac{8}{9}=0,8* frac{9}{8} = frac{8}{10}* frac{9}{8}= frac{1*9}{10*1}= frac{9}{10}=0,9$

Answer 2

ну я изменил

Answer 3

крос