Question

O valor da expressão numérica ( -2 - 3/4 + 5/8) - ( 6 - 9/2) é:
A) 5/8
B) 29/8
C) -5/8
D) -29/8

Answer 1

Resposta:

$(-\frac{2}{1}-\frac{3}{4} +\frac{5}{8})-(\frac{6}{1}-\frac{9}{2})\\ (\frac{-16-6+5}{8})+(\frac{-12+9}{2})\\ -\frac{17}{8} -\frac{3}{2} \\\frac{-17-12}{8} = - \frac{29}{8}$

Letra D