Question

Descubra o valor das expressões abaixo.


Me ajudem por favor...☆​

Answer 1

Explicação passo-a-passo:

$a)\frac{5}{6} + \frac{1}{2}.\frac{3}{4} = \frac{5}{6} + \frac{3}{6} = \frac{8}{6} = \frac{4}{3} \\\\ b)5 - \frac{7}{4}.\frac{1}{2} = 5 - \frac{7}{8} = \frac{33}{8} \\\\ c)\frac{2}{3}.\frac{1}{5} + 2\frac{1}{4} = \frac{3}{15} + \frac{9}{4} = \frac{12}{60} + \frac{135}{60} = \frac{147}{60} \\\\ d)\frac{3}{5} + \frac{2}{9}:\frac{2}{3} = \frac{3}{5} + \frac{2}{6} = \frac{18}{30} + \frac{10}{30} = \frac{28}{30} \\\\ e)\frac{2}{7}.\frac{3}{5} - \frac{1}{8}:\frac{5}{6} = \frac{6}{35} - \frac{3}{20} = \frac{24}{140} - \frac{21}{140} = \frac{3}{140} \\\\ f)\frac{3}{4} + \frac{5}{9}:\frac{1}{6} = \frac{3}{4} + \frac{30}{9} = \frac{27}{36} + \frac{120}{36} = \frac{49}{12}$

Espero ter ajudado.