Question

Îmi trebuie urgent va rog frumos sa! ​

Answer 1

Răspuns:

Explicație pas cu pas:

a). $\frac{32}{25} *\frac{15}{16} *\frac{5}{6} =\frac{2400}{3600} =\frac{24}{36} =\frac{4}{6} =\frac{2}{3}$

b). $\frac{5}{7} *1\frac{13}{15} *\frac{8}{7} =\frac{5}{7} *\frac{28}{15} *\frac{8}{7} =\frac{3920}{735} =\frac{784}{147}$

c). $2\frac{1}{2} *\frac{1}{3} +\frac{2}{9} =\frac{5}{2} *\frac{1}{3} +\frac{2}{9}=\frac{5}{6}+\frac{2}{9} =\frac{15}{18} +\frac{4}{18} =\frac{19}{18}$

d). $\frac{7}{5} +\frac{2}{5} *2\frac{3}{2} =\frac{7}{5} +\frac{2}{5} *\frac{7}{2} =\frac{7}{5} +\frac{14}{10} =\frac{14}{10} +\frac{14}{10} =\frac{28}{10} =\frac{14}{5}$

e). $2\frac{2}{9} *\frac{6}{26} -\frac{2}{27} *\frac{8}{9} =\frac{20}{9} *\frac{6}{26} -\frac{2}{27} *\frac{8}{9} =\frac{120}{234} -\frac{2}{27} *\frac{8}{9} =\frac{60}{117} -\frac{16}{243} =$