Question

Решите 2 уравнения. ​

Answer 1

Ответ:

1)х=17/75.

2)х=1.

Объяснение:

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Answer 2

Ответ:

6) x = 17/75

7) x = 1

$4x - 1.2 (2 - 5x) = 1 - 5x \\ 4x - 2.4 + 6x = 1 - 5x \\ 10x - 2.4 = 1 - 5x \\ 10x + 5x = 1 + 2.4 \\ 15x = 3.4 \\ x = \frac{17}{75}$

$7(4 - x) + 3(x - 5) = 9x \\ 28 - 7x + 3x - 15 = 9x \\ 13 - 4x = 9x \\ - 4x - 9x = - 13 \\ - 13x = - 13 \\ x = 1$