A= -(-7+5)-(2-(3-4)) B= -1-(4-(-2))+(-2+3)
Mathématiques
Anonyme
Question
A= -(-7+5)-(2-(3-4)) B= -1-(4-(-2))+(-2+3)
2 Réponse
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1. Réponse maudmarine
A= -(-7+5)-(2-(3-4))
A = (7 - 5) - (2 - (-1))
A = 2 - 3
A = - 1
B = -1 - (4 - (- 2)) + (- 2 + 3)
B = - 1 - (4 + 2) + (1)
B = - 1 - (6) + 1
B = - 1 - 6 + 1
B = - 7 + 1
B = - 6 -
2. Réponse Anonyme
A = -(-7 + 5) - (2 - (3 - 4))
= -(-2) - (2 - (-1))
= 2 - (2 + 1)
= 2 - 3
= -1
B = -1 - (4 - (-2)) + (-2 + 3)
= -1 - (4 + 2) + 1
= -1 - 6 + 1
= -6