Question

me pueden ayudar porfavor​

Answer 1

Explicación:

6.

$\frac{x - 2}{2} + \frac{x - 3}{3} + \frac{x - 4}{4} = 10 \\ \\ \frac{x}{2} - \frac{2}{2} + \frac{x}{3} - \frac{3}{3} + \frac{x}{4} - \frac{4}{4} = 10 \\ \\ \frac{x}{2} + \frac{x}{3} + \frac{x}{4} - 3 = 10 \\ \\ \frac{6x + 4x + 3x}{12} = 10 + 3 \\ \\ (6 + 4 + 3)x = 13(12) \\ \\ 13x= 13(12) \\ \\ x = \frac{13(12)}{13} \\ x = 12$

7.

$\frac{3x - 7}{12} - \frac{2x - 3}{6} = \frac{x - 1}{8} \\ \\ \frac{3x - 7}{12} \times \frac{2}{2} - \frac{2x - 3}{6} \times \frac{4}{4} = \frac{x - 1}{8} \times \frac{3}{3} \\ \\ \frac{6x - 14 - 8x + 12}{24} = \frac{3x - 3}{24} \\ \\ - 2x - 2 = 3x - 3 \\ 3x + 2x = 3 - 2 \\ 5x = 1 \\ \\ x = \frac{1}{5}$