Ответ:
1. 72a=72a
2. 75x
3. 128ab
4. 135mn
5. 40abc
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Ответ:
1. 72a=72a
2. 75x
3. 128ab
4. 135mn
5. 40abc
2. 3x * 25 = 3 * 25 * a = 75a
3. 16a * 8b = (16 * 8) * a * b = 148ab
4. 15m * 9n = (15 * 9) * m * n = 135mn
5. 2a * 4b * 5c = (2 * 4 * 5) * a * b * c = 49abc