DM DE MATHS : exercice 1 : Calcule les équations ci-dessous en détaillant les étapes. Attention aux priorités.
A = 13 - (+3) x (-4) - 8.
B = -30 : (-9 + 15).
C = (3/2 + 3/5) (5/4 - 4/3).
D = 4/3 - 5/2 : (-2/3) + 3/4.
A = 13 - (+3) x (-4) - 8.
B = -30 : (-9 + 15).
C = (3/2 + 3/5) (5/4 - 4/3).
D = 4/3 - 5/2 : (-2/3) + 3/4.
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Bonsoir ,A = 13 - (-12) - 8
A = 13 + 12 - 8
A = 17
B = -30 ÷ 6
B = -5
C = (15/10 + 6/10) × (15/12 - 16/12 )
C = 21/10 × -1/12
C = -21/120
C = -7/40
D = 4/3 - 5/2 × -3/2 + 3/4
D = 4/3 - (-15/4) + 3/4
D = 16/12 - (-45/12) + 9/12
D = 16/12 + 45/12 + 9/12
D = 70/12