(10d+u-17)/(d+u)=5
(10d+u-2)/(u-2))=19
10d+u-17=5d+5u
10d-5d+u-4u=17
5d-4u=17
d=(17+4u)/5
(10d+u-2)/(u-2))=19
10d+u-2=19u-38
10d=18u-36
d=(18u-36)/10
(17+4u)/5=(18u-36)/10
34+8u=18u-36
70=10u
u=7
(10d+7-17)/(d+7)=5
(10d-10)=5d+35
5d=45
d=9
El numero es 97.
97-17=80
80/16=5
97-2=95
95/5=19
d = Decenas
u= Unidades
-Espero que te sirva
