Bonjour
Exercice 1 :
Nombre x | 4/3 | -7/5 | ... | ... | ...
Inverse x...| ...... | ....... | 6 | -7 | ...
Opposé x | ....... | .......| ... | .... | 8/9
L’inverse de x : 1/x
L’opposé de x : -x
Nombre x | 4/3 | -7/5 | 1/6 | -1/7 | -8/9
Inverse x...| 3/4 | -5/7 | 6 | -7 | -9/8
Opposé x | -4/3 | 7/5 | -1/6 | 1/7 | 8/9
Exercice 2 :
Calculer :
A = 1/5 : 5
A = 1/5 x 1/5
A = 1/25
B = 2/3 : 1/3
B = 2/3 x 3
B = 3/3 x 2
B = 2
C = 3/-7 : -1/7
C = -3/7 x -7
C = 3 x 7/7
C = 3
D = -8 : 1/8
D = -8 x 8
D = -64
Exercice 3 :
Calculer :
A = 11/5 : (-3)
A = 11/5 x (-1/3)
A = -11/15
B = (-3) : 11/5
B = -3 x 5/11
B = -15/11
C = 5/6 : 6/5
C = 5/6 x 5/6
C = 25/36
D = 2/-3 : -5/7
D = -2/3 x -7/5
D = 14/15
