Sagot :
Réponse :
x + 6 = -8 admet -14 comme solution
x + 6 = -8 => x + 6 - 6 = -8 - 6 =-14
2y + 3 = - 11 admet -7 comme solution
2y + 3 = - 11 => 2y + 3 - 3 = - 11 - 3 = -14 => 2y / 2 = y = -14 / 2 = -7
5b - 3 = 17 admet 4 comme solution
5b - 3 = 17 => 5b - 3 + 3 = 17 + 3 = 20 => 5b / 5 = b = 20 / 5 = 4
8x + 3 = 5x +27 admet 8 comme solution
8x + 3 = 5x +27 => 8x + 3 -3 = 5x +27 -3 => 8x - 5x = 3x = 24 => 3x / 3 = x = 24 / 3 =8
-4x - 6 = 9x +20 admet -2 comme solution
-4x - 6 = 9x +20 => -4x - 6 + 4x = 9x +20 + 4x => -6 - 20 = 13x + 20 - 20 => -26 / 13 = -2 = 13x / 13 =x