Question

resolva as expressões ​

Answer 1

.

$\dfrac{2}{3} + ( \dfrac{3}{2} ) {}^{2} - ( \dfrac{4}{3} ) {}^{2}$

$\dfrac{2}{3} + \dfrac{9}{4} - \dfrac{16}{9}$

$\dfrac{24 + 81 - 64}{36}$

$\dfrac{41}{36}$

.

$- \dfrac{5}{4} \times \dfrac{3}{7} + \dfrac{1}{3}$

$- \dfrac{15}{28} + \dfrac{1}{3}$

$\dfrac{ - 45 + 28}{84}$

$- \dfrac{17}{84}$

.

$\dfrac{5}{4} - 2$

$\dfrac{5 - 8}{4}$

$- \dfrac{3}{4}$