Réponse :
Explications étape par étape
bsr,
exercice 2
1)
x=9/3 = 3
2)
x=0
3)
t=-3/5
4)
t=-8/2 = -4
5)
y = 4/7
6)
y=0
Exercice 3
1)
x= 4/3 +5/4 = 16/12 + 15/12 = 31/12
2)
x = 5/7 +7/3 = 15/21 +49/21 = 64/21
3)
x= 5/8 -3/12 = 15/24 - 6/24 = 9/24 = 3/8
4)
1+2/7 = x = 7/7 -2/7 = 5/7
Exercice 4
z-8 +z +z+3 = 61
3z -5 = 61
3z= 61+5 = 66
z = 66/3 = 22
☺
