Bonjour,
A= 7x-5
x= 2
7*2 -5 = 14-5 = 9
x= 0
7*0 -5 = -5
x=-3
7*-3 -5 = -21-5 = -26
x= 2/7
7*2/7 -5 = 14/7 -5 = 2-5 = -3