Bonsoir,
a.
(3x + 1) / 2 + 3/4 = 5/3x - 1 + 2x
(18x + 6) / 12 + 9/12 = 20/12x - 12/12 + 24/12x
18x + 6 + 9 = 20x - 12 + 24x
18x - 20x - 24x = - 12 - 6 - 9
- 26x = - 27
x = 27/26
b.
4x - (5x + 6) / 6 = (3x - 2) / 18 - x/3
72x/18 - (15x + 18) / 18 = (3x - 2) / 18 - 6x/18
72x - 15x - 18 = 3x - 2 - 6x
72x - 15x - 3x + 6x = - 2 + 18
60x = 16
x = 16/60
x = 4/15
c.
(5x + 3) / 3 + 1 = 2x/15 - 2/5
(25x + 15) / 15 + 15/15 = 2x /15 - 6/15
25x + 15 + 15 = 2x - 6
25x - 2x = - 6 - 15 - 15
23x = - 36
x = - 36/23
