Question

calculati : 1/2 : {1-2/3)^3+0,(5) + 2[1-(7/3-0,(3))^2]}

Answer 1

1/2 : (1/3)^3 + 5/9 + 2[ 1 - (7/3 - 1/3)^2] = 
1/2 : 1/27 + 5/9 + 2[ 1 - 2^2] = 
27/2 + 5/9 + 2 x (-3) =
27/2 + 5/9 - 6 = 
(243 + 10 - 108)/18 = 
145/18 = 
8,0(5)