Bonjour
a. 2x - 1 = 52x + 1
2x - 52x = 1 + 1
- 51x = 2
x = - 2/51
b. 5x + 3 - 2x - 1 = x - 1 + 3x + 2
5x - 2x - x - 3x = - 1 + 2 - 3 + 1
- x = - 1
x = 1
c. 4/3x - 5 = 2x + 3
1/3x - 2x = 3 + 5
1/3x - 6/3x = 8
- 5/3x = 24/3
- 5x = 24
x = - 24/5
d. 3x + 5 - 8 = 3x + 2x + 1
3x - 3x - 2x = 1 - 5 + 8
- 2x = 4
x = - 4/2
x = - 2.
e. 3/5x + 2/3 = 2/5x + 10/3
3/5x - 2/5x = 10/3 - 2/3
1/5x = 8/3
3x = 40
x = 40/3
f. 3 (1/3x + 2) = 6x + 3 - 7x + 4
3/3x + 6 = 6x + 3 - 7x + 4
x - 6x + 7x = 3 + 4 - 9
0x = - 5
Pas de solution.
