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1/2x + 3-3 = 2-3 (kedua sisi dikurangi 3)
1/2x = -1
1/2x . 2 = -1.2 (kedua sisi dikali 2)
x = -2
⇔ (kedua ruas dikalikan 2)
⇔ x + 6 = 4
⇔ x + 6 - 6 = 4 - 6 (kedua ruas dikurangi 6)
⇔ x = -2
⇔ x = {-2}