Question

есть только 2 часа пожалуйста помогите!!!​

Answer 1

1)

$\frac{2(x - 9)}{3} = \frac{3(x - 6)}{4} - \frac{x + 10}{6} \\ \\ \frac{2x - 18}{3} = \frac{9(x - 6)}{12} - \frac{2(x + 10)}{12} \\ \\ \frac{2x - 18}{3} = \frac{9x - 54}{12} - \frac{2x + 20}{12} \\ \\ \frac{2x - 18}{3} = \frac{9x - 54 - 2x - 20}{12} \\ \\ \frac{2x - 18}{3} = \frac{7x - 74}{12} \\ \\ 12(2x - 18) = 3(7x - 74) \\ \\ 4(2x - 18) = 7x - 74 \\ \\ 8x - 72 = 7x - 74 \\ \\ 8x - 7x = 72 - 74 \\ \\ x = - 2$

2)

$\frac{2(x + 1)}{3} - \frac{3x + 7}{12} = \frac{5(2x + 3)}{8} - 2 \\ \\ \frac{8(x + 1)}{12} - \frac{3x + 7}{12} = \frac{10x + 15}{8} - \frac{16}{8} \\ \\ \frac{8x + 8}{12} - \frac{3x + 7}{12} = \frac{10x + 15 - 16}{8} \\ \\ \frac{8x + 8 - 3x - 7}{12} = \frac{10x - 1}{8} \\ \\ \frac{5x + 1}{12} = \frac{10x - 1}{8} \\ \\ 8(5x + 1) = 12(10x - 1) \\ \\ 2(5x + 1) = 3(10x - 1) \\ \\ 10x + 2 = 30x - 3 \\ \\30x - 10x = 2 + 3 \\ \\ 20x = 5 \\ \\ x = 0.25$

Answer 2

Ответ:

Пошаговое объяснение: