Question

2 и 3 столбики СРОЧНО ПОМОГИТЕ

Answer 1

$1,6+ frac{2}{5} =1 frac{6}{10}+ frac{2}{5}= frac{16}{10} + frac{2}{5} = frac{8+2}{5}= frac{10}{5}= frac{2}{1} =2 \ \ 2 frac{1}{4} +3,5= frac{9}{4}+3 frac{5}{10}= frac{9}{4}+ frac{35}{10}= frac{9+14}{4}= frac{23}{4}=5 frac{3}{4} =5,75 \ \ 0,75+1 frac{1}{6} = frac{75}{100} + frac{7}{6} = frac{3}{4} + frac{7}{6} = frac{9+14}{12} = frac{23}{12} =1 frac{11}{12} \ \ 0,5- frac{1}{3} = frac{1}{2} - frac{1}{3} = frac{3-2}{6} = frac{1}{6}$

$frac{3}{4} -0,4= frac{3}{4} -frac{4}{10} = frac{15-8}{20} = frac{7}{20} =0,35 \ \ 1,9-1 frac{1}{2} =1frac{9}{10} -1frac{1}{2} =frac{19}{10} - frac{3}{2} = frac{19-15}{10} = frac{4}{10} = frac{2}{5} =0,4$