bonjour
mets niveau collège et pas lycée STP
2 x + 4 = 5 x - 7
2*3/4 + 4 = 5 *3/4 - 7
6/4 + 4 = 15/4 - 7
6/4 + 16/4 = 15/4 - 28/4
22 / 4 ≠ 13/4
2 x /3 - 5 = x /2 - 3
2 x /3 * - 23/12 - 5 = x /2 * - 23 /12 - 3
2 x /3 * - 12/23 - 5 = x /2 * - 12/23 - 3
- 24 x / 69 - 5 = - 12 x / 46 - 3
- 48 x / 138 - 690/138 = - 36 x / 138 - 414/138
- 48 x / 138 - 690/138 ≠ - 36 x /138 - 414 /138
x + 4 = x - 7
8 + 4 = 8 - 7
12 ≠ 1
2 x + 5 = 2 x + 4 + 1
2 x + 5 = 2 x + 5
- 4/3 + 15/3 = - 4 /3 + 15 /3
