Question

x=(-⅓)³+[3-¹-(-3)-¹]-¹ alguém ajuda ?

Answer 1

$\ \ x=(-\frac{1}{3})^3 +[3^{-1}-(-3^{-1})]^{-1}\\ \\ x=-\frac{1}{27} +[ \frac{1}{3}-(-\frac{1}{3}})]^{-1}\\ \\ x=-\frac{1}{27} +[ \frac{1}{3}+\frac{1}{3}}]^{-1}\\ \\ x=-\frac{1}{27} +[ \frac{2}{3}]^{-1}\\ \\ x=-\frac{1}{27} +\frac{3}{2}\\ \\ x=-\frac{2}{54} +\frac{81}{54}\\ \\ x=\frac{-2+81}{54} \\ \\ x=\frac{79}{54}$