Répondre :
Bonjour;
a)
4*2 -10 = 8-10 = -2
faux
4*3 -10= 12-10 = 2
faux
b)
4*2 -12 =8-12 = -4
faux
4*3 -12 = 12-12 = 0
c'est bon
c)
2*2 -4 =4-4 = 0
5*2 -10 = 10-10 = 0
c'est bon
2*3 -4 = 6-4 = 2
5*3-10 = 15-10 = 5
faux
d)
3*2-7 = 6-7 = -1
2+1 = 3
faux
3*3 -7 = 9-7 = 2
3+1 = 4
faux