Respuesta :

pandaeyes1021

Answer:

x = 10

Step-by-step explanation:

Add like terms:

x + 4x + 30 = 80

5x + 30 = 80

Then, subtract 30 from both sides:

5x + 30 = 80

     -30     -30

__________

5x = 50

Finally divide both sides by 5:

5x = 50

x = 10