Ответ:
Объяснение:
a) -(3a - 6) + 3 (2 - 2a) + 15a = - 3a + 6 + 6 - 6a + 15a = 6a + 12
б) 0.9 (a-3b) - 0.2 (5b - 3a) - 1.7b = 0.9a - 2.7 b - b = 0.6a - 1.7b = 1.5a - 5.4b
в) 4 (5n - 2 (n - 1)) + 10 = 4 (5n - 2n + 2) + 10 = 4 (3n + 2) + 10 = 12n + 8 + 10 =
12n + 18
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Answers & Comments
Ответ:
Объяснение:
a) -(3a - 6) + 3 (2 - 2a) + 15a = - 3a + 6 + 6 - 6a + 15a = 6a + 12
б) 0.9 (a-3b) - 0.2 (5b - 3a) - 1.7b = 0.9a - 2.7 b - b = 0.6a - 1.7b = 1.5a - 5.4b
в) 4 (5n - 2 (n - 1)) + 10 = 4 (5n - 2n + 2) + 10 = 4 (3n + 2) + 10 = 12n + 8 + 10 =
12n + 18