Question

cuanto da esto: (12x-20):4=-2x

Answer 1

Espero que te sirva :)

Answer 2

(12x - 20)/4 = - 2x

12x - 20 = - 2x (4)

12x - 20 = - 8x

12x + 8x = 20

20x = 20

x = 20/20

x = 1

Solución : 

x = 1