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3x=10+8
3x=18
x=18/3
x=6
R= el numero es 8
El número es = s
El triple del número es = 3s
3s - 8 = 10
3s = 10 + 8
3s = 18
s = 18/3
s = 6
Respuesta.
El número es 6
COMPROBAMOS
3s - 8 = 10
3 (6) - 8 = 10
18 - 8 = 10
10 = 10
Es correcto!!!