12 - 3 + 3 + 3 + 3, 30 - 5+5+5+5+5+5, 16 - 2+2+2+2+2+2+2+2, 32 - 8+8+8+8, 24 - 4+4+4+4+4+4, 36 - 6+6+6+6+6+6, 9+9+9 - 27,

Adunarea repetata de termeni egali

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