Océanee59
Answered

Calculer ; 

 

a) 2 - [ ( 3 ) - (  - 6 ] ;                        

c) ( - 4 - [ ( - 5 ) - ( - 3 ) ] + ( - 1 ) ;

b) - [ ( - 4 ) + ( + 5 ) ] + 7 ;  

Sagot :

nathalienouts
a) 2-(3+6) = 2 - 9 = -7
c) -4- [-5+3]-1 = -4-(-2)-1 = -4+2-1 = 3
b) +4-5+7 = 11-5 = 6