Réponse :
Explications étape par étape
Bonsoir
A = 1/5 x -4/3 + 7/2
A = -4/15 + 7/2
A = -(4 x 2)/(15 x 2) + (7 x 15)/(2 x 15)
A = -8/30 + 105/30
A = 97/30
B = 4/5 : (-3/7) - 7/10
B = 4/5 x (-7/3) - 7/10
B = -28/15 - 7/10
B = (-28 x 2)/(15 x 2) - (7 x 3)/(10 x 3)
B = -56/30 - 21/30
B = -77/30
C = 13/7 + (-8/7) : (-4/5)
C = 13/7 - 8/7 x (-5/4)
C = 13/7 + 8/4 x 5/7
C = 13/7 + 2 x 5/7
C = 13/7 + 10/7
C = 23/7
D = 7/3 + 3/2 x (-10/21)
D = 7/3 - 10/2 x 3/21
D = 7/3 - 5 x 1/7
D = 7/3 - 5/7
D = (7 x 7)/(3 x 7) - (5 x 3)/(7 x 3)
D = 49/21 - 15/21
D = 34/21
E = 5/8 + (-3/4) : (-9/16)
E = 5/8 + 3/4 x 16/9
E = 5/8 + 16/4 x 3/9
E = 5/8 + 4 x 1/3
E = 5/8 + 4/3
E = (5 x 3)/(8 x 3) + (4 x 8)/(3 x 8)
E = 15/24 + 32/24
E = 47/24
F = 6/5 - (-1/9) x (-3/4)
F = 6/5 - (3/9) x 1/4
F = 6/5 - 1/3 x 1/4
F = 6/5 - 1/12
F = (6 x 12)/(5 x 12) - (1 x 5)/(12 x 5)
F = 72/60 - 5/60
F = 67/60
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Réponse :
Explications étape par étape
Bonsoir
A = 1/5 x -4/3 + 7/2
A = -4/15 + 7/2
A = -(4 x 2)/(15 x 2) + (7 x 15)/(2 x 15)
A = -8/30 + 105/30
A = 97/30
B = 4/5 : (-3/7) - 7/10
B = 4/5 x (-7/3) - 7/10
B = -28/15 - 7/10
B = (-28 x 2)/(15 x 2) - (7 x 3)/(10 x 3)
B = -56/30 - 21/30
B = -77/30
C = 13/7 + (-8/7) : (-4/5)
C = 13/7 - 8/7 x (-5/4)
C = 13/7 + 8/4 x 5/7
C = 13/7 + 2 x 5/7
C = 13/7 + 10/7
C = 23/7
D = 7/3 + 3/2 x (-10/21)
D = 7/3 - 10/2 x 3/21
D = 7/3 - 5 x 1/7
D = 7/3 - 5/7
D = (7 x 7)/(3 x 7) - (5 x 3)/(7 x 3)
D = 49/21 - 15/21
D = 34/21
E = 5/8 + (-3/4) : (-9/16)
E = 5/8 + 3/4 x 16/9
E = 5/8 + 16/4 x 3/9
E = 5/8 + 4 x 1/3
E = 5/8 + 4/3
E = (5 x 3)/(8 x 3) + (4 x 8)/(3 x 8)
E = 15/24 + 32/24
E = 47/24
F = 6/5 - (-1/9) x (-3/4)
F = 6/5 - (3/9) x 1/4
F = 6/5 - 1/3 x 1/4
F = 6/5 - 1/12
F = (6 x 12)/(5 x 12) - (1 x 5)/(12 x 5)
F = 72/60 - 5/60
F = 67/60