Question

1-encontre o resultado para:
A) -5/4 +4/5+0,5 =
B) 1/2-(1/4-1/8) =
C) (6/7) . (-2/3) =
D) (-3/5) : (-3/5) =
E) 8/3 : (-3,5) =
F) (-0,12) . (-1/10) =
G) (4,57) +(0,49) +(8,01) =
H) (10,8) - (0,29) -(7,38) =
I) (47,77) : (2,81) =
J) (5,26) . (4,46) =

Answer 1

Resposta:

Explicação passo-a-passo:

A) -5/4 +4/5+0,5 =  $\frac{-25+16+10}{20}$ = $\frac{1}{20}$

B) 1/2-(1/4-1/8) =  $\frac{4-2+1}{8}$ = 3/8

C) (6/7) . (-2/3) =  $-\frac{12}{21} = -\frac{4}{7}$

D) (-3/5) : (-3/5) =  $(-\frac{3}{5}) . (- \frac{5}{3} )$ = $\frac{15}{15}$ = 1

E) 8/3 : (-3,5) =  8/3 : (-7/2) = $\frac{8}{3} . (-\frac{2}{7} ) = -\frac{16}{21}$

F) (-0,12) . (-1/10) =  $-\frac{12}{100} . (-\frac{1}{10} ) = \frac{12}{1000} = \frac{6}{500}$

G) (4,57) +(0,49) +(8,01) =  13,7 ou $\frac{137}{10}$

H) (10,8) - (0,29) -(7,38) =  3,13 ou $\frac{313}{100}$

I) (47,77) : (2,81) =  17

J) (5,26) . (4,46) = 23 ,4596 ou $\frac{234596}{10000}$