Respuesta :

Answer:

a=1/2

b= -24

Explanation:

a) 12x+8=2x+13

12x-2x=13-8

10x=5

x=5/10

x=1/2

b) -2x-20+25=53

-2x=53+20-25

-2x=48

2x= -48

x= -24

Answer:

1 answer 23/78

2 answer 2.34............