Himpunan dari |x-3|=|x+4|

|x - 3| = |x + 4|
= (f(x) + g(x)) (f(x) - g(x))
= (x - 3 + x + 4) (x - 3 - x - 4)
= (2x + 1) (-7)
= -14x - 7
-14x - 7 = 0
-14x = 7
x = -1/2
HP = {x | x = -1/2, x elemen bilangan R}