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x = 100 simplificamos 100/76 = 25/19
38 76
x = 25
38 19
x= 25(38) 38/19=2
19
x=25(2)
x=50
antonio tiene 50 años
La edad de Antonio = x
x - 24% de x = 38
x - 24% * x = 38
x - 24x/100 = 38
100x/100 - 24x/100 = 38
(100x - 24x)/100 = 38
76x = 38*100
x = 3800/76
x = 50
Respuesta.
La edad actual de Antonio es 50 años