Ответ:
Объяснение:
А)-4b+6+12b-8=8b-2
Б)15a-a-3+2a-1=16a-4
В)5а-(6а-(7a-8a+9))=5a-(6a-7a+8a-9)=5a-6a+7a-8a+9=-2+9
а) -2(2b-3)+4(3b-2) = -4b + 6 + 12b - 8 = 8b - 2 = 2(4b - 1)
б) 15a - (a + 3) + (2a - 1) = 15a - a - 3 + 2a - 1 = 16a - 4 = 4(4a - 1)
в) 5a-(6a-(7a-(8a-9))) = 5a - (6a - (7a - 8a + 9) = 5a - (6a - 7a + 8a - 9) = 5a - 6a + 7a - 8a + 9 = 9 - 2a
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Ответ:
Объяснение:
А)-4b+6+12b-8=8b-2
Б)15a-a-3+2a-1=16a-4
В)5а-(6а-(7a-8a+9))=5a-(6a-7a+8a-9)=5a-6a+7a-8a+9=-2+9
Ответ:
а) -2(2b-3)+4(3b-2) = -4b + 6 + 12b - 8 = 8b - 2 = 2(4b - 1)
б) 15a - (a + 3) + (2a - 1) = 15a - a - 3 + 2a - 1 = 16a - 4 = 4(4a - 1)
в) 5a-(6a-(7a-(8a-9))) = 5a - (6a - (7a - 8a + 9) = 5a - (6a - 7a + 8a - 9) = 5a - 6a + 7a - 8a + 9 = 9 - 2a