Bonsoir,
A+
-4-7+8-5+8
=8+8-4-7-5
= 16 -16
=0
b=
8+5+2-6-2-7
= 13-6-7
=13-13
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Bonsoir,
A+
-4-7+8-5+8
=8+8-4-7-5
= 16 -16
=0
b=
8+5+2-6-2-7
= 13-6-7
=13-13
=0