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Sagot :

AYUDA

bjr

1) priorité à la multiplication donc

A = -14 + 12 + 2 = -14 + 14 = 0             puisque  -3 x (-4) = +12

2)

a) A = (-14 - 3) x (-4 +2) = -17 x (-2) = +34

b) A = -14 - (3 x (-4 + 2)) = -14 - (3 x (-2)) = -14 + 6 = - 8

c)A = (-14 - 3) x (-4) + 2 = -17 x (-4) + 2 = + 68 + 2 = 70

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