Пошаговое объяснение:
20 + 45 - (5 * 9) = 20
1) 5 * 9 = 45
2) 20 + 45 = 65
3) 65 - 45 = 20
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Пошаговое объяснение:
20 + 45 - (5 * 9) = 20
1) 5 * 9 = 45
2) 20 + 45 = 65
3) 65 - 45 = 20