Verified answer

Ответ:

Пошаговое объяснение:

(2x - 1)/8 = (3x + 2)/5

8*(3x + 2) = 5*(2x - 1)

24x + 16 = 10x - 5

24x - 10x = -5 - 16

14x = -21

x = -21 : 14

x = -1,5

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(1,4m - 3,5)*3 = 9 - 2,3m

4,2m - 10,5 = 9 - 2,3m

4,2m + 2,3m = 9 + 10,5

6,5m = 19,5

m = 19,5 : 6,5

m = 3

ответ: при m=3

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4x*(a - 2) = 2*(3x - 7)

4ax - 8x = 6x - 14

4ax - 14x = -14

при x=5

4*5a - 14*5 = -14

20a - 70 = -14

20a = 56

a = 56:20

a = 2,8

ответ: при а=2,8

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8n + 11 = 8*(n + 3) - 13

8n + 11 = 8n + 24 - 13

8n + 11 = 8n + 11

8n - 8n = 11 - 11

0 = 0

n є (-∞ ; ∞)

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