Question

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Answer 1

Ответ:

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Answer 2

Ответ:

Пошаговое объяснение:

2(6x - 5) - 7(3x - 5) = 4x - 1

12x - 10 - 21x + 35 = 4x - 1

-9x + 25 = 4x - 1

4x + 9x = 25 + 1

13x = 26

x = 26:13

x = 2

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6(3x - 4) - 7(2x + 5) = 2x - 1

18x - 24 - 14x - 35 = 2x - 1

4x - 59 = 2x - 1

4x - 2x = 59 - 1

2x = 58

x = 58:2

x = 29

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2,3(x - 0,3) + 0,5x = 2,8x

2,3x - 0,69 + 0,5x = 2,8x

2,8x - 0,69 = 2,8x

2,8x - 2,8x = -0,69

0 = -0,69

0  ≠  -0,69

уравнение не имеет корней

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