Question

Calcule o valor da expressão :

$2 + \frac{1}{2} . \frac{4}{9} - \frac{2}{5} ( \frac{3}{4} - \frac{1}{3} )$

Answer 1

2+4/18-2/5(3/4-1/3)
2+4/18-2/5(9-4)
2+4/18-2/5*5
2+4/18-2
36+4-36
----------=  4
   18

Answer 2

$2 + \frac{1}{2} . \frac{4}{9} - \frac{2}{5} ( \frac{3}{4} - \frac{1}{3} ) \\ \\ 2 + \frac{4}{18} - \frac{2}{5} ( \frac{5}{12} ) \\ \\ 2 + \frac{4}{18} -\frac{10}{60} \\ \\ 2 + \frac{2}{9} -\frac{1}{6} \\ \\ \frac{36+4-3}{18} \\ \\ \frac{37}{18}= 2,056$

espero ter ajudado