Respuesta :

Answer:

8

Step-by-step explanation:

3x-4=20

3x-4+4=20+4

3x=24

3x/3=24/3

x=8

Answer:

x =8

Step-by-step explanation:

3x - 4 = 20​

Add 4 to each side

3x-4+4 = 20+4

3x = 24

Divide each side by 3

3x/3 =24/3

x = 8