Question

-1/4 × [ 2/3 - ( -1 + 1/2 )]​

Answer 1

$-\frac{1}{4}\left[\frac{2}{3}-\left(-1+\frac{1}{2}\right)\right]\\\\\frac{2}{3}-\left(-1+\frac{1}{2}\right)\\\\=\frac{2}{3}-\left(-\frac{1}{2}\right)\\\\=\frac{7}{6}\\\\=-\frac{1}{4}\cdot \frac{7}{6}\\\\-\frac{1}{4}\cdot \frac{7}{6}\\\\=-\frac{1\cdot \:7}{4\cdot \:6}\\\\=-\frac{1\cdot \:7}{4\cdot \:6}\\\\=-\frac{7}{4\cdot \:6}\\\\=-\frac{7}{24}$

Resultado Final:

$=-\frac{7}{24}$