Question

Va rog sa ma ajutați cu ex 7

Answer 1

Răspuns:$\frac{9}{15} \frac{12}{20}.\frac{30}{50} }$

a)prima o imparti la 3, a doua la 4, a 3-a la 10

$b)\frac{1}{2} ^{4} = \frac{4}{8} \\\frac{3}{2} ^4=\frac{12}{8} \\\frac{5}{6}^4=\frac{20}{24} \\\frac{13}{99}^4=\frac{52}{396} \\\frac{8}{13}^4=\frac{32}{52} \\\\\frac{5}{11}^4=\frac{20}{44} \\c) \frac{5}{20} :5=\frac{1}{10} \\\frac{15}{30} :5=\frac{3}{6}\\= \frac{1}{2} \\ \frac{10}{175} :5=\frac{2}{25} \\\frac{20}{45} :5=\frac{4}{9} \\\frac{25}{110} :5=\frac{5}{22} \\\frac{30}{85} :5=\frac{6}{17}$

Explicație pas cu pas: