Respuesta :

51.
2+3x = 62
3x = 60

x = 20

52.
6x+2 + 40 = 90
6x = 48

x = 8

53.
3x+18 + 93 = 180
3x = 69

x = 23

54.
x-24 + 29 + 296 = 360

x = 59