Question

Ayudaa porfa es urgente ​

Answer 1

Explicación paso a paso:

$7x - 15 = 20 \\ 7x = 35 \\ x = 5$

$- 5x - 8 = 12 \\ - 5x = 20 \\ x = - 4$

$4x - 10 = 26 \\ 4x = 36 \\ x = 9$

$- 6x - 18 = 10 \\ - 6x = 28 \\ x = - \frac{14}{3}$