24 Regrouper par paire les calculs qui
aboutissent au même résultat.
a) (+17) + (+5) b) (+17) - (+5)
c) (-17) - (-5)
d) (+17) - (-5)
e) (-17) - (+5) f) (+17) + (-5)
g) (-17) + (+5) h) (-17) + (-5)
Aidez moi s’il vous plaît !?
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