Respuesta :

Answer:

x = 31

Step-by-step explanation:

x + x + 28 = 90

2x + 28 = 90

2x = 62

x = 31

rb5994

x = 31

Step-by-step explanation:

x + x + 28 = 90

2x + 28 = 90

2x = 62

x = 31