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|5(2 - x)| = 0
|10 - 5x| = 0
caso positivo, 10 - 5x >= 0:
|10 - 5x| = 0
10 - 5x = 0
5x = 10
x = 2
caso negativo, 10 - 5x < 0:
|10 - 5x| = 0
-(10 - 5x) = 0
-10 + 5x = 0
5x = 10
x = 2
los resultados son equivalentes.