Предмет: Алгебра, автор: elizavetauradnikova9

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2. Решите уравнение:

а) 8у + 30 = 8(у + 3) – 33

б) 12а – (5а + 25) = - 24

в) 3х - 16 = 26 – 3(4 + 9х)

Ответы

Автор ответа: ghgftt201
5

а) 8y + 30 = 8 (y + 3) - 33

8y + 30 = 8y + 24 - 33

8y - 8y = 24 - 33 - 30

0y = -39

нет решений

б) 12a - (5a + 25) = -24

12a - 5a - 25 = -24

12a - 5a = 25 - 24

7a = 1

a = 1/7

в) 3x - 16 = 26 - 3 (4 + 9x)

3x - 16 = 26 - 12 - 27x

3x + 27x = 26 - 12 +16

30x = 30

x = 1


germanty32: a)ответ -4 -7/8
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