Question

Решите пожалуйста. Дам 10 баллов.

Answer 1

Ответ:

Объяснение:

1)$3\frac{1}{2} -\frac{9}{10} *\frac{6}{3} =\frac{7}{2} -\frac{54}{30} =\frac{7}{2}-\frac{9}{5} =\frac{7*5}{2*5} -\frac{9*2}{5*2} =\frac{35-18}{10} =\frac{17}{10} =1,7$

2)$\frac{3}{5} *(\frac{4*4}{5*4} +\frac{11}{20} )= \frac{3}{5} *\frac{16+11}{20} =\frac{3}{5} *\frac{27}{20} =\frac{81}{100} =0,81$

3)$1/(\frac{1}{36} +\frac{1}{46} ) = 1/(\frac{1*23}{36*23} +\frac{1*18}{46*18})=1/\frac{23+18}{828} =1/\frac{41}{828} =1* \frac{828}{41} = 20\frac{8}{41}$

4)$7\frac{3}{4}- \frac{3}{22} /\frac{6}{11} =\frac{31}{4} -\frac{3}{22} *\frac{11}{6}=\frac{31}{4}-\frac{33}{132} =\frac{31}{4}-\frac{1}{4} =\frac{30}{4}=7,5$

5)$(\frac{5}{12} -\frac{1}{3} )/\frac{5}{16} =(\frac{5}{12} -\frac{1*4}{3*4} )/\frac{5}{16} =\frac{5-4}{12} /\frac{5}{16}=\frac{1}{12} *\frac{16}{5} =\frac{16}{60} =\frac{4}{15}$