Respuesta :

Answer:

x=3

Step-by-step explanation:

3x+4=13

-4=-4

3x=9

÷3=÷3

x=3

x=3
in this situation 3x+4=13
so you put 3 where x is and it would look like: 3(3)+4=13
3(3)=9
which makes 9+4= 13