Question

calcule e simplifique D)(+17/24)+(-5/6) =
E)3,2 +22,1-(-2)=
F)78,9 ×1,75 G)8/7-9/7=​

Answer 1

D)(+17/24)+(-5/6) =

$( \frac{17}{24} ) + ( - \frac{5}{6} ) = \frac{17}{24} - \frac{5}{6} \\ \frac{17 - 20}{24} = \frac{ - 3}{24} = \frac{ - 1}{8}$

Obs: mínimo múltiplo

E)3,2 +22,1-(-2)=

$3.2 + 22.1 - ( - 1) \\ 3.2 + 22.1 + 1 \\ 26.3$

F)78,9 ×1,75

$78.9 \times 1.75 \\ 138.075$

G)8/7-9/7=

$\frac{8}{7} - \frac{9}{7} = \frac{8 - 9}{7} = - \frac{1}{7}$

Obs: mínimo múltiplo