Respuesta :

Answer:

option C both

Step-by-step explanation:

13x - 42 = 18 -7x

13x + 7x -42 = 18

20x - 42 = 18  ------------joey

13x - 42 = 18 - 7x

13x = 18 +42 -7x

13x = 60 -7x ---------nolan