Bonjour, je bloque sur cette question. Merci d'avance. S= (+5) + (-9) - (+3)

On a également:

A: S=-7
B: S=-1
C: S=-17
D: S=_7

T= (+2) × (-10) + (-8) × (-4)

On a également:

A: T=-12
B: T=12
C: T=4
D: T=-52
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