Tres números consecutivos
x = menor
x + 1 = mediano
x + 2 = mayor
x / 2 = mitad del menor
(x + 1) / 3 = tercera parte del mediano
(x + 2) / 5 = quinta parte del mayor
x / 2 + (x + 1) / 3 - (x + 2) / 5 = 5
30[x / 2 + (x + 1) / 3 - (x + 2) / 5 = 5]
30 / 2 x + 30 / 3 (x + 1) - 30 / 5 (x + 2) = 30(5)
15x + 10(x + 1) - 6(x + 2) = 150
15x + 10x + 10 - 6x - 12 = 150
25x - 6x - 2 = 150
19x - 2 = 150
19x = 150 + 2
19x = 152
x = 152 / 19
x = 8
Números :
Menor x = 8
Medio x + 1 = 8 + 1 = 9
Mayor x + 2 = 8 + 2 = 10
R.
Los números consecutivos son :
8, 9 y 10
Comprobación :
x / 2 + (x + 1) / 3 - (x + 2) / 5 = 5
8 / 2 + (8 + 1) / 3 - (8 + 2) / 5 = 5
8 / 2 + 9 / 3 - 10 / 5 = 5
4 + 3 - 2 = 5
7 - 2 = 5
5 = 5.