Répondre :
Choix du nombre = 2
2 +3 = 5 X 4 = 20 - 12 = 8
x = 1/3
1/3 +3 = 1/3 +9/3 = 10/3 X 4 = 40/3 -12 =
40/3 - 36/3 = 4
x = -5/7
-5/7 + 3 = - 5/7 +21/7 = 16/7 X 4 = 64/7 - 12 =
64/7 - 84/7
-20
2 +3 = 5 X 4 = 20 - 12 = 8
x = 1/3
1/3 +3 = 1/3 +9/3 = 10/3 X 4 = 40/3 -12 =
40/3 - 36/3 = 4
x = -5/7
-5/7 + 3 = - 5/7 +21/7 = 16/7 X 4 = 64/7 - 12 =
64/7 - 84/7
-20