Question

2. Aplica la propiedad distribu
tiva y resuelve.

A. 7(x - 5) - x = 3

B. -3 (2 x - 5) -5 x = 3x

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

D. 4x +2 (2x -5) = (x -3) - (8 - x)

E. 9x -2 (x - 4x) = 3x -2 (3 - x)

Por favor ayudenme​

Answer 1

Respuesta:

$7(x - 5) - x = 3 \\ 7x - 35 - x = 3 \\ 7x - x = 3 + 35 \\ 6x = 38 \\ x = \frac{38}{6}$

$- 3(2x - 5) - 5x = 3x \\ - 6x + 15 - 5x = 3x \\ - 6x - 5x - 3x = - 15 \\ - 14x = - 15 \\ x = \frac{ - 15}{ - 14} \\ x = \frac{15}{14}$

$7(x - 2) - 6x + 1 = 3 - 4x \\ 7x - 14 - 6x + 1 = 3 - 4x \\ 7x - 6x + 4x = 3 - 1 + 14 \\ 5x = 16 \\ x = \frac{16}{5}$

$4x + 2(2x - 5) = ( \times - 3) - (8 - x) \\ 4x + 4x - 10 = x - 3 - 8 + x \\ 8x - 2x = - 11 + 10 \\ 6x = - 1 \\ x = - \frac{1 }{6}$

$9x - 2(x - 4x) = 3x - 2(3 - x) \\ 9x - 2x + 8x = 3x - 6 + 2x \\ 15x - 3x - 2x = - 6 \\ 10x = - 6 \\ x = - \frac{6}{10} \\ \\ si \: queres \: le \: sacas \: la \: mitad \\ x = - \frac{3}{5}$