Question

Calcule o valor de cada expressao: ME AJUDEM PFV ESSE 1/2 E FRAÇAO
a 1/2-(-3/5) + 7/10=
b -(-1) - (-4/3) + 5/6=
c 2-(-2/3 - 1/4 ) + 0,1=
d (-1+1/2)-(-1/6+ 2/3)=
e 2-[3/5-(-1/2+1/4]=
f 3-[-1/2-(0,1+1/4)=

Answer 1

Bom dia Gustavo

a) 

1/2 - (-3/5) + 7/10
5/10 + 6/10 + 7/10 = 18/10 = 9/5 

b) 

-(-1) - (-4/3) + 5/6
6/6 + 8/6 + 5/6 = 19/6 

c) 

2 - (-2/3 - 1/4) + 1/10
2 + 2/3 + 1/4 + 1/10 
240/120 + 80/120 + 30/120 + 12/120 = 362/120 = 181/60

d)
 
(-1 + 1/2) - (-1/6 + 2/3)
-1 + 1/2 + 1/6 - 2/3
-6/6 + 3/6 + 1/6 - 4/6 = -6/6 = -1

e)

2 - [3/5 - (-1/2 + 1/4] 
2 - 3/5 + 1/2 - 1/4
40/20 - 12/20 + 10/20 - 5/20 = 33/20 

f) 

3 - [-1/2 -(1/10 + 1/4)]
3 + 1/2 + 1/10 + 1/4
60/20 + 10/20 + 2/20 + 5/20 = 77/20