Tentukan himpunan selesaian dari persamaan berikut : a) x + 12 =40
b) x - 4 = 12
c) 25 = x - 8
d) x + 5 = -20
e) x - 2 = - 12
b) x - 4 = 12
c) 25 = x - 8
d) x + 5 = -20
e) x - 2 = - 12
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