Bonjour;
a)
3+8-5
= 11-5 = 6
b)
9+6+7-13
9+13-13+= 9
c)
6+4 - (9+11)
10-20
= -10
d)
12+9+7 +10-4
= 21+17 -4
= 38-4
= 34
e)
8+14-( 12+5+13)
= 22- 30
= -8
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Bonjour;
a)
3+8-5
= 11-5 = 6
b)
9+6+7-13
9+13-13+= 9
c)
6+4 - (9+11)
10-20
= -10
d)
12+9+7 +10-4
= 21+17 -4
= 38-4
= 34
e)
8+14-( 12+5+13)
= 22- 30
= -8