Bonjour,
A=
2 -1 -(-2)=
2-1 +2= 3
B=
5-[( 17-11) - (8)]=
5-( 6 -8)=
5 -6 +8= 7
C=
-18 - 30 -3 = -51
D=
-6 -21 +6= -21
E=
25 -63 = -38
F= (5-3)/( -7+2)=
2/ -5 = -2/5 =-0,4
