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( x - 5 ) - 2 = 3
( x - 5 ) = 3 + 2
( x - 5 ) = 5
x - 5 = 5
x + 5 + 5
x = 10
|x-5|=5. atau. |x-5|=-5
x=5+5. x=5-5
x=10. x=0
|x-5|=5. |x-5|=-5
|10-5|=5. |0-5|=-5
5=5. -5=-5
HP={0,10}