Dacă x = y și x + y = 10, atunci x este:, 5, 10, 12, 7, Adunând x+y=8 cu x-y=2, obținem:, 2x = 6, 2x = 10, 2y = 10, x = 10, Perechea (x, y) pentru x+y=5 și x-y=1 e:, (4, 1), (5, 0), (2, 3), (3, 2), Rezultatul ecuației x - 7 = -3 este:, 10, -4, 4, -10, Soluția ecuației x + 12 = 20 este:, 8, 32, 12, 7
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QUIZZ 7A
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Alexichim103
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