bonjour
1 ) A = 14 x
B = 5 x²
C = 12 a²
2 ) D = 4 x - 36
E = 10 b + 15
F = - 32 t + 8
3 ) G = 4 x + 5 - 6 x = - 2 x + 5
H = 9 - 3 a - 4 a - 6 = - 7 a + 2
I = 7 + 3 x - 2 y + 5 = 3 x - 2 y + 12
4 ) J = 5 x² - 9 x - 10
5 ) K = 8 ( x - 2 )
L = 6 ( a - 7 )