Question

O valor de (1/4 - 1/2) * 8 é?

Answer 1

$( \frac{1}{4} - \frac{1}{2} ) * 8 = ( \frac{1}{4} - \frac{2}{4} )*8 = ( \frac{-1}{4} )*8 = - \frac{8}{4} =-2$

Answer 2

$(\frac{1}{4} \ - \ \frac{1}{2}) \ * \ 8 \ = \\ \\ mmc \ (2, \ 4) \ = \ 4 \\ \\ (\frac{1 \ - \ 2}{4}) \ * \ 8 \ = \\ \\ (\frac{- \ 1}{\ \ \ 4}) \ * \ 8 \ = \\ \\ \frac{- \ 8}{\ \ \ 4} \ = \\ \\ - \ 2$