Question

решите пожалуйста (3)​

Answer 1

Ответ:

$\frac{x + 4}{2} - x = 9 \\ x + 4 - 2x = 18 \\ x - 2x = 18 - 4 \\ - x = 14 \\ x = - 14$

$\frac{x + 2}{6} - \frac{x}{7} = 2 \\ 7x + 14 - 6x = 84 \\ 7x - 6x = 84 - 14 \\ x = 70$

$5 + \frac{x}{2} = \frac{3x + 6}{5} \\ 50 + 5x = 6x + 12 \\ 5x - 6x = 12 - 50 \\ - x = - 38 \\ x = 38$

$8 + x = \frac{x + 2}{7} \\ 56 + 7x = x + 2 \\ 7x - x = 2 - 56 \\ 6x = - 54 \\ x = - 9$

Answer 2

Ответ:

Пошаговое объяснение:

$5 + \frac{x}{2} =\frac{3x+6}{5}$

$\frac{50}{10} + \frac{5x}{10} =\frac{2(3x+6)}{10}$

$\frac{50}{10} + \frac{5x}{10} =\frac{6x+12}{10}$

$\frac{50}{10} + \frac{5x}{10} -\frac{6x+12}{10}=0$

$\frac{50+5x-6x-12}{10}=0$

$\frac{38-x}{10}=0$

${38-x}=0$

x = 38