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2 Aflá valoarea necunoscutei: a) (ax 2-40): 23 = 12 b) a 2 + (123 x 3-53 x 4) = 257 c) a: a + a-ax0 = 56 d) 2 x 111-5-[5x4+ (7 + 4) : a] = 76 e) 9x [3+4x (15 + 6x a): 18] = 81 f) [(a: 3-1): 6 + 489]: 25 + 2 = 26 60 g) (a: 5-4):3-260: 2 = 1 h) 800 [425-13x (48: 4)-(89+ ax 4)] = 10 i) [(625: a + 65 x 7): 5]: 3-14 = 18 j) ax 4+ (6x7-5x6-72:8) x 76 = 332 k) (651-72x4-306: 2): a x 9 = 45 I) 1 000 - ax [100: (7 x 12-74) - 5] = 500​

2 Aflá Valoarea Necunoscutei A Ax 240 23 12 B A 2 123 X 353 X 4 257 C A A Aax0 56 D 2 X 11155x4 7 4 A 76 E 9x 34x 15 6x A 18 81 F A 31 6 489 25 2 26 60 G A 5432 class=

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