Question

Resolución de operación {9-[2-1(1-5)]}-[4-(5-4)+(-5)]

Answer 1

{9-[2-1(1-5)]}-[4-(5-4)+(-5)]=
[9-(2+4)]-(4-1-5)=
(9-6)-(-2)=
3+2=
5

:D

Answer 2

Solución :

{9 - [2 - 1 ( 1 - 5 )]} - [4 - (5 - 4 ) + (-5)] =

[9 - (2 + 4 )] - (4 - 1 - 5 ) =

(9 - 6 ) - (-2) =

3 + 2 =

5=

R// =5