bonsoir
Calculer :
A = 3/4 - 7/6
A = (3 x 3)/(4 x 3) - (7 x 2)/(6 x 2)
A = 9/12 - 14/12
A = -5/12
B = 3/4 x 8/33
B = 8/4 x 3/33
B = (4 x 2)/4 x 3/(3 x 11)
B = 2 x 1/11
B = 2/11
C = 2/7 x 3/2 - 8/7
C = 2/2 x 3/7 - 8/7
C = 3/7 - 8/7
C = -5/7
D = 4/3 + 2/3
D = (4 + 2)/3
D = 6/3
D = (3 x 2)/3
D = 2
E = (0,4 x 3,2)/3,6
E = (4 x 32)/360
E = (4 x 4 x 8)/(8 x 45)
E = 16/45
F = (20 - 8 x 7) / (8 - 7 x 20)
F = (20 - 56) / (8 - 140)
F = (-36)/(-132)
F = (3 x 12)/(11 x 12)
F = 3/11
