Question

срочно помогите пожалуйста, даю 40 баллов!!

Answer 1

Ответ:

$1\frac{1}{35}$

Пошаговое объяснение:

$1)3\frac{1}{2} +2\frac{5}{10} =3,5+2,5=6\\ \\ 2)2\frac{5}{10}-1\frac{1}{3} = 2\frac{15}{30}-1\frac{10}{30} = 1\frac{5}{30} =1\frac{1}{6}\\ \\ 3)6:1\frac{1}{6} =6:\frac{7}{6} =6*\frac{6}{7} =\frac{36}{7} \\ \\ 4) 4,6-2\frac{1}{3} =4\frac{3}{5} -2\frac{1}{3} =4\frac{9}{15} -2\frac{5}{15} =2\frac{4}{15} \\ \\ 5)4,6+2\frac{1}{3}=4\frac{3}{5} +2\frac{1}{3}= 4\frac{9}{15} +2\frac{5}{15}=6\frac{14}{15}$

$6)2\frac{4}{15} :6\frac{14}{15} =\frac{34}{15}:\frac{104}{15} =\frac{34}{15} *\frac{15}{104} = \frac{17}{52} \\ \\ 7)\frac{36}{7} *\frac{17}{52} =\frac{153}{91}$

$8)\frac{153}{91} *5,2=\frac{153}{91} *\frac{52}{10} =\frac{306}{35} \\ \\ 9)\frac{1}{7} -0,125=\frac{1}{7}-\frac{125}{1000} =\frac{1}{7} - \frac{1}{8}=\frac{8}{56}-\frac{7}{56} =\frac{1}{56} \\ \\ 10)0,05: \frac{1}{56} =\frac{5}{100} :\frac{1}{56} =\frac{1}{20} *\frac{56}{1} = \frac{14}{5} \\ \\ 11)\frac{14}{5}+5.7=2,8+ 5,7=8,5\\ \\ 12)\frac{306}{35} :8,5=\frac{306}{35} :\frac{85}{10} =\frac{306}{35} *\frac{2}{17} =\frac{36}{35}=1\frac{1}{35}$