Question

срочно 2 обведенных номера​

Answer 1

1118.

$\frac{7}{20}*9+12*\frac{7}{36}+1\frac{8}{15}:4+\frac{3}{5} :4\frac{1}{2}=\frac{7*9}{20}+\frac{12*7}{36}+\frac{23}{15}:4+\frac{3}{5}:\frac{9}{2}=\\\\=\frac{63}{20} +\frac{7}{3}+\frac{23}{15*4}+\frac{3}{5}*\frac{2}{9}=\frac{63}{20}+\frac{7}{3}+\frac{23}{60}+\frac{2}{15}=\frac{189}{60}+\frac{140}{60}+\frac{23}{60}+\frac{8}{60} =\frac{189+140+23+8}{60}=\\\\=\frac{360}{60}=6$

1124.

$(\frac{2}{7}:\frac{3}{7}+(4\frac{1}{2}-3\frac{5}{6})*3\frac{1}{3}):(6\frac{1}{2}:9) =(\frac{2}{3} +(\frac{9}{2}-\frac{23}{6})*\frac{10}{3}) : (\frac{13}{2}:9)=(\frac{2}{3} + (\frac{27}{6}-\\\\-\frac{23}{6})*\frac{10}{3}):\frac{13}{18}= (\frac{2}{3}+\frac{2}{3}*\frac{10}{3}):\frac{13}{18} =(\frac{2}{3}+\frac{20}{9}):\frac{13}{18}=(\frac{6}{9}+\frac{20}{9}) :\frac{13}{18}=\frac{26}{9}: \frac{13}{18} =\\\\=\frac{26*18}{9*13}=\frac{2*2}{1} =4$