Répondre :
Bonsoir;
1. (E1): 2x+1=3; la solution est
2x= 3-1
2x = 2
x= 2/2
x = 1
2. (E2): 5x 10 =??; la solution est
3. (E3)-6x=12; la solution est-6x= 12
x = -12/6
x= -2
4. (E4): x-2=-3; la solution est
x = -3+2
x = -1
5. (Es): 10r ??? 10; la solution est rs =
6. (E):10x=-10; la solution est
x = -10/10
x = -1