Question

" Calcule o resultado das expressões numéricas "
POR FAVOR ME RESPONDAM, TO PRECISANDO MUITO ​

Answer 1

Explicação passo-a-passo:

a)

$\sf \dfrac{\frac{5}{2}}{\frac{2}{5}}$

$\sf =\dfrac{5}{2}\cdot\dfrac{5}{2}$

$\sf =\red{\dfrac{25}{4}}$

b)

$\sf \dfrac{\frac{2}{3}+\frac{3}{2}}{4}$

$\sf =\dfrac{\frac{4+9}{6}}{4}$

$\sf =\dfrac{\frac{13}{6}}{4}$

$\sf =\dfrac{13}{6}\cdot\dfrac{1}{4}$

$\sf =\red{\dfrac{13}{24}}$

c)

$\sf \dfrac{\frac{4}{5}-\frac{2}{3}}{\frac{1}{4}\cdot\frac{4}{3}}$

$\sf =\dfrac{\frac{12-10}{15}}{\frac{4}{6}}$

$\sf =\dfrac{\frac{2}{15}}{\frac{4}{6}}$

$\sf =\dfrac{2}{15}\cdot\dfrac{6}{4}$

$\sf =\dfrac{12}{60}$

$\sf =\dfrac{12\div12}{60\div12}$

$\sf =\red{\dfrac{1}{5}}$