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Lenguaje algebraico:
Duplo del numero= 2x
Triple del numero =3x
2x + 3x = 25
5x =25
x = 25/5
x = 5 este es le numero
Comprobemos: Donde esta "X" damos el valor
2(5) + 3(5) = 25
10+ 15 = 25
25 = 25