Question

O resultado da expressão (1/3 - 1/2) - (5/6 - 3/4) é:

I. - 3/4

II. - 1/2

III.- 1/4

IIII. 3/4

Answer 1

III. –¼

$( \frac{1}{3} - \frac{1}{2} ) - ( \frac{5}{6} - \frac{3}{4} ) = \\ \\( \frac{2 - 3}{6} ) - (\frac{20 - 18}{24} ) = \\ \\ \frac{ - 1}{6} - \frac{2}{24} = \\ \\ \frac{ - 1}{6} - \frac{1}{12} = \\ \\ \frac{ - 2 - 1}{12} = \frac{ - 3}{12} = \\ \\ \boxed{\red{\frac{ - 1}{4}}}$