Question

Cum se face 4 -1 supra 8-[2-(3 supra 2-3 supra 4)]

Answer 1

   4 - 1/8 - [2 - (3/2 - 3/4)] = 
= 32/8 - 1/8 - [2 - (6/4 - 3/4)] = 
= 31/8 - (2-3/4) = 
= 31/8 - (8/4 - 3/4) = 
= 31/8 - 5/4 = 
= 31/8 - 10/8 = 
= 21/8

Answer 2

4 - 1/8 - [ 2 - 3/2 - 3/4 ) ] =
4 - 1/8 - [ 2 - 6/4 - 3/4 ) ] =
4 - 1/8 - ( 2 - 3/4 ) =
4 - 1/8 - ( 8/4 - 3/4 ) = 
4 - 1/8 - 5/4 = 
32/8 - 1/8 - 10/8 =
31/8 - 10/8 = 21/8

Succes! :))