bonjour
2 ( x - 3 ) = 4 ( x - 1 ) + 4
2 x - 6 = 4 x - 4 + 4
2 x - 4 x = 6
- 2 x = 6
x = - 3
4 - ( 3 x + 1 ) = 3 ( x + 5 )
4 - 3 x - 1 = 3 x + 15
- 3 x - 3 x = 15 - 4 + 1
- 6 x = 12
x = - 12 /6 = - 2
Bonjour,
2(x - 3) = 4(x - 1) + 4
2 * x + 2 * -3 = 4 * x + 4 * -1 + 4
2x - 6 = 4x - 4 + 4
2x - 6 = 4x
2x - 4x = 6
-2x = 6
x = -6/2 = -3
4 - (3x + 1) = 3(x + 5)
4 - 3x - 1 = 3 * x + 3 * 5
3 - 3x = 3x + 15
- 3x - 3x = 15 - 3
-6x = 12
x = -12/6 = -2
