Question

1 - [ -2 - (- 6/5 + 2) + 1/2] + 1/4

Answer 1

1-[-2-(-6+10/5)+1/2]+1/4∴ 1-[-2-(4/5)+1/2]+1/4∴ 1-[-2-4/5+1/2]+ 1/4∴1-[-20-8+5/10]+1/4∴ 1-[-23/10]+ 1/4∴1+23/10+1/4 ∴ 20+ 46+ 5/20∴71/20

Answer 2

Oi Luana,

1-[-2-(-6/5+2)+1/2]+1/4

1-[-2-($\frac{-6+10}{5} +1/2]+1/4$=

1-[-2-[(4/5)+1/2]+1/4=

1-[-2-4/5+1/2]+1/4=

1-[-14/5 + 1/2]+1/4=

1-[$[ \frac{-28+5}{10} ]+ \frac{1}{4}$=

1+$\frac{23}{10} + \frac{1}{4}$=

$\frac{1}{1} + \frac{23}{10} + \frac{1}{4}$=

$\frac{40+92+10}{40}$=$\frac{142}{20}$=3,55

Outra forma em números decimais:

1-[-2-(-6/5+2)+1/2]+1/4=
1-[-2-(-1,2+2)+0,5]+0,25=
1-[-2-(0,8)]+0,5]+0,25=
1-[-2-0,8+0,5]+0,25=
1-+2,3+0,25=
1+2,3+0,25=3,55


Resposta 3,55

Bons estudos!!!