👤

9. Calculeaza a) (4 + 8 + 12): (2 + 4 + 6); c) (6+ 12 + 18): (3 + 6 + 9); Catalot 1a zi b) (4 + 8 + 12 + 16+ ... + 100): (2 + 4 + 6+ ... +50): d) (6 + 12 + 18+ ... + 300P :(3+6+9+...+150).​