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2 x =x-24
5
:v
x = Total de paginas que tiene el libro
Solución:
x - 2x/5 = 24
(5x - 2x)/5 = 24
3x/5 = 24
3x = 24 × 5
3x = 120
x = 120/3
x = 40 -------->>> Rta
Entonces el libro cuenta con 40 páginas.