Question

1. y - 5 = 3y- 25


2. 5x + 6= 10x + 5​

Answer 1

Respuesta:

1. y-5 = 3y-25

$y - 5 = 3y - 25$

$y - 3y = - 25 + 5$

$- 2y = - 20$

$y = \frac{ - 20}{ - 2}$

$y = + 10$

Y comprobamos sustituyendo

$10 - 5 = 3(10) - 25$

$10 - 5 = 30 - 25$

$5 = 5$

2. 5x + 6= 10x + 5

$5x + 6 = 10x + 5$

$5x - 10x = 5 - 6$

$- 5x = - 1$

$x = \frac{ - 1}{ - 5}$

$x = \frac{1}{5}$