Exercice 3
1 ) 7h + 6h = 13h
2 ) 12t - 5t = 7t
3 ) 9j + 17j = 26t
4 ) 4k - 3k = k
Exercice 4
1 ) 8s + 5s = 13s
2 ) 10y - 8 - 4y = 6y -8
3 ) 4a + 7n + 1a + 4n = 11n + 5a
4 ) 7t² - 4t² = 3t²
5 ) 5p + 7p² - 2p² - 5p² + 3p = 8p
6 ) 2g² + 4h + 3g + 2h + 5g² + 7h + 11g + 3h² = 7g² + 3h² + 13h + 14g
7 ) 8j² + 9 + 5j + 3j + 1 + 2j + 7j² + 4 = 15j² + 10j + 14
