Répondre :
A= 12+6-2+7-8
= 25-10
=15
B= 1,35-2,7+0,65-1,3
=2-4
= -2
C= 1-2+3-4
=4-6
=-2
D=6-4-11+5
=11-15
=-4
E=-2+3-8+8_2?
=-10+11
=1
F=-3-[4-(-6)]
=-3-[4+6]
=-3-10
=-13
= 25-10
=15
B= 1,35-2,7+0,65-1,3
=2-4
= -2
C= 1-2+3-4
=4-6
=-2
D=6-4-11+5
=11-15
=-4
E=-2+3-8+8_2?
=-10+11
=1
F=-3-[4-(-6)]
=-3-[4+6]
=-3-10
=-13