bonjour
A = 9 a - 4 a - 14 = 5 a - 14
B = - 2 y² + y - 10
C = - 7 x - 3 + 3 x - 4 = - 4 x - 7
D = - 15 - 12 + 2 x + 3 x + 4 = 5 x - 23
E = 4 ( x - 2 )
F = 2 x ( 3 + 8 ) = 2 x ( 11 )
g = 4 x - 12
H = - 3 x - 6
1 = 5 - 3 ( 2x - 5); comprends pas
J = 10 - 8 x + 4 - 8 x = - 16 x + 14