Réponse :
Bonjour
Explications étape par étape
A = 2/3 +4
A = 2/3 + 4 X 3/3
A = 2/3 12/3
A = 14/3
B = 2/3 X 4
B = 8/3
C = 3/4 -12/5
C = 3/4 X 5/5 -12/5 X 4/4
C = 15/20 -48/20
C = -33/20
D = 3/4 X 12/5
D = 36/20 = 18/10 = 9/5
E= -2/5 +4/7
E = -2/5 X 7/7 +4/7 X 5/5
E = -14/35 +20/35
E = 6/35
F = 12/7 +6/7 X 1/3
F = 12/7 + 6/21
F = 12/7 X 3/3 +6/21
F = 36/21 +6/21
F = 42/21
F = 14/7= 2
G = 5/3 -16/45 X 35/8
G = 5/3 -560/360
G = 5/3X 120/120 -560/360
G = 600/360 -560/360
G = 40/360 = 20/180 = 2/18 = 1/9
H = 14/3 sur 3/4 -1/6
14/3
3/4 X 6/6 -1/6 X 4/4
14/3
18/24 -4/24
14/3
14/24
14/3 X 24/14
336/42 = 56/7 = 8
