Sagot :
Bonjour,
2x - 3 = 7 + x
2x - x -3 = 7 + x - x
x - 3 = 7
x - 3 + 3 = 7 + 3
x = 10
S = {10}
Salut
2 * x - 3 = 7 + x
2x - x = 7 + 3
x = 7 + 3
x = 10
Bonne soirée :)
Bonjour,
2x - 3 = 7 + x
2x - x -3 = 7 + x - x
x - 3 = 7
x - 3 + 3 = 7 + 3
x = 10
S = {10}
Salut
2 * x - 3 = 7 + x
2x - x = 7 + 3
x = 7 + 3
x = 10
Bonne soirée :)