Bonjour;
E= 7-5 +2-3+7-5+3
= 19- 13
= 6
F=
-10-5 +3-2 -13+12
=15- 25
= -10
G=
12 +8 -4 +7 -9-3+4
= 31- 16
= 15
H=
5 - ( 12+5-11-7-1)
= 5-12 -5 +11+7+1
= 23- 17