Question

ПОМОГИТЕ ПОЖАЛОВАТЬ РЕШИТЬ ​

Answer 1

Ответ: 2

Объяснение:

АА) 22-)_)-)-=)6=)6)&66)₽_)₽)&-_=&)=&-

Answer 2

Объяснение:

$a) \ (1\frac{17}{25}*2\frac{1}{7}-2\frac{4}{7}*1\frac{2}{5} )*2\frac{7}{9}=0.\\ 1)\ 1\frac{17}{25}*2\frac{1}{7}=\frac{42}{25}*\frac{15}{7} =\frac{18}{5} .\\ 2)\ 2\frac{4}{7} *1\frac{2}{5} =\frac{18}{7} *\frac{7}{5}=\frac{18}{5}.\\ 3)\ \frac{18}{5} -\frac{18}{5} =0.\\ 4)\ 0*2\frac{7}{9}=0.$

$b)\ \frac{1}{2}+(5\frac{1}{6}-3\frac{3}{4} +\frac{1}{2} )*\frac{10}{23}=1,5.\\ 1)\ 5\frac{1}{6}-3\frac{3}{4} +\frac{1}{2}=\frac{31}{6} -\frac{15}{4}+\frac{1}{2} =\frac{31*2-15*3+1*6}{12} =\frac{62-45+6}{12}=\frac{23}{12}.\\ 2)\ \frac{23}{12}*\frac{10}{23}=\frac{5}{6}.\\ 3)\ \frac{1}{2}+\frac{5}{6}=\frac{1*3+6*1}{6} =\frac{3+6}{6}=\frac{9}{6}=\frac{3}{2}=1,5.$

$c)\ (6\frac{1}{8}*1\frac{2}{7} -2\frac{11}{14} *1\frac{8}{13})*1\frac{3}{5} =5,4 .\\ 1)\ 6\frac{1}{8}*1\frac{2}{7} =\frac{49}{8}*\frac{9}{7}=\frac{63}{8}.\\ 2)\ 2\frac{11}{14} *1\frac{8}{13}=\frac{39}{14} *\frac{21}{13}=\frac{9}{2}.\\ 3)\ \frac{63}{8}-\frac{9}{2}=\frac{63*1-9*4}{8}=\frac{63-36}{8} =\frac{27}{8} . \\ 4)\ \frac{27}{8}*1\frac{3}{5} =\frac{27}{8}*\frac{8}{5}=\frac{27}{5}=5,4.$

$d)\ 1\frac{1}{7} *(\frac{9}{16} +4\frac{2}{3} *\frac{9}{56} )=1,5.\\1)\ \frac{9}{16} +4\frac{2}{3} *\frac{9}{56} =\frac{9}{16} +\frac{14}{3} *\frac{9}{56}=\frac{9}{16}+\frac{3}{4} =\frac{9*1+3*4}{16}=\frac{9+12}{16}=\frac{21}{16}.\\ 2)\ 1\frac{1}{7}*\frac{21}{16}=\frac{8}{7}*\frac{21}{16} =\frac{3}{2}=1,5.$