Question

Qual o valor da expressão?


$(-2)+(-3) .(- 2)^{-1} :(-3)$

a)1

b)$-\frac{5}{6}$

c)$-\frac{5}{3}$

d)$-\frac{5}{2}$

Answer 1

Resposta:

$( - 2) + ( - 3) \times ( - 2)^{ - 1} \div (- 3)$

$( - 2) + ( - 3) \times ( - \frac{1}{2}) \div ( - 3)$

$( - 2) + ( - 3) \times \frac{1}{6}$

$( - 2) + ( - \frac{3}{6})$

$( - \frac{12}{6}) + ( - \frac{3}{6})$

$- \frac{12}{6} - \frac{3}{6} = \frac{ - 12 - 3}{6} = - \frac{15}{6} = - \frac{5}{2}$

Espero ter te ajudado