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25 15
--- = ----
x 9
9 * 25 = 15x
(9 * 25 /15 = x Simplifico el 15
3 * 5 = x
15 = x
Respuesta.
25/15 = 15/9
25/x = 15/9
Resolvemos :
25 (9) = x (15)
225 = 15x
225/15 = x
15 = x
Respuesta : El valor de x es = 15