A = -2/3 + 7/4 A = (-2 * 4)/(3 * 4) + (7 * 3)/(4 * 3) A = -8/12 + 21/12 A = 13/12
B = 2/9 * (-6/5) B = (2 * (-6))/(9 * 5) B = -12/45 B = (-4 * 3)/(15 * 3) B = -4/15
Diviser par un nombre, c'est multiplier par son inverse C = -7/3 ÷ 6/5 C = -7/3 * 5/6 C = (-7 * 5)/(3 * 6) C = -35/18
D = 2 + 7/6 - 7/24 + 1/8 D = 2/1 + 7/6 - 7/24 + 1/8 D = 48/24 + 28/24 - 7/24 + 3/24 D = 72/24 D = 3
Les multiplications et les divisions sont prioritaires E = 7/8 - 3/8 * 11/3 + 7/6 ÷ (-4) E = 7/8 - 33/24 + 7/6 * -1/4 E = 7/8 - 33/24 + -7/24 E = 21/24 - 33/24 -7/24 E = -19/24
F = (1 + 2/3)/(4/5 - 7/15) F = (3/3 + 2/3)/(12/15 - 7/15) F = (5/3)/(5/15) F = (5/3)/(1/3) F = 5/3 * 3/1 F = 15/3 F = 5
Lista de comentários
Verified answer
Bonjour,A = -2/3 + 7/4
A = (-2 * 4)/(3 * 4) + (7 * 3)/(4 * 3)
A = -8/12 + 21/12
A = 13/12
B = 2/9 * (-6/5)
B = (2 * (-6))/(9 * 5)
B = -12/45
B = (-4 * 3)/(15 * 3)
B = -4/15
Diviser par un nombre, c'est multiplier par son inverse
C = -7/3 ÷ 6/5
C = -7/3 * 5/6
C = (-7 * 5)/(3 * 6)
C = -35/18
D = 2 + 7/6 - 7/24 + 1/8
D = 2/1 + 7/6 - 7/24 + 1/8
D = 48/24 + 28/24 - 7/24 + 3/24
D = 72/24
D = 3
Les multiplications et les divisions sont prioritaires
E = 7/8 - 3/8 * 11/3 + 7/6 ÷ (-4)
E = 7/8 - 33/24 + 7/6 * -1/4
E = 7/8 - 33/24 + -7/24
E = 21/24 - 33/24 -7/24
E = -19/24
F = (1 + 2/3)/(4/5 - 7/15)
F = (3/3 + 2/3)/(12/15 - 7/15)
F = (5/3)/(5/15)
F = (5/3)/(1/3)
F = 5/3 * 3/1
F = 15/3
F = 5