Question

1- Calcule o valor das expressões:

$( -1 - \frac{1}{2}) - ( - \frac{1}{2} {)}^{2}$
$( -2 - \frac{1}{2} - \frac{1}{2}) \div ( -2 - \frac{7}{5} )$
$( - \frac{1}{9} - \frac{1}{3} ) + ( \frac{1}{4} - \frac{2}{3} ) - ( \frac{5}{2} )$
$(2 - \frac{1}{3} {)}^{2} \div ( \frac{1}{2} - 1)$
$( \frac{1}{2} {)}^{2} - ( + \frac{3}{4} ) { }^{ -2} + ( \frac{2}{3} {)}^{3} - ( - \frac{1}{3} ) ^{ -2}$

Me ajudem pfv!!​

Answer 1

Espero ter ajudado, bons estudos