Question

calcular
a:-8-[21/(-3)]+[6*(-2)-7]
b:-[-6/2-4*(-5)]*(-2)-2

Answer 1

$-8[ \frac{21}{(-3)}]+[6(-2)-7]$

$-8[-7] +[-12-7]$

$56-19=37$


$-[ \frac{-6}{2-4}(-5)](-2)-2$

$-[ \frac{-6}{-2}(-5)](-2)-2$

$-[3(-5)](-2)-2$

$-[-15](-2)-2$

$15(-2)-2$

$-30-2=-32$