Sagot :
Bonsoir,
3+ x = 25
x = 25-3
x= 22
-15 + x = 32
x= 32+15
x= 47
2 + x = 5
x= 5-2
x=3
8 - 45 + x = - 47
x= -47 +45
x= -2
Réponse :
Bonsoir
Explications étape par étape :
3+ x = 25
x = 25 - 3
x = 22
S = {22}
--------------------------------------------
-15 + x = 32
x = 32 + 15
x = 47
S = {47}
------------------------------------------------------------
2 + x = 5, 8
x = 5,8 - 2
x = 3,8
S = {3,8}
-----------------------------------------------------------
- 45 + x = - 47
x = - 47 + 45
x = - 2
S = {-2}