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-10x + 20 = 6x - 6 + 2
20+6-2 = 6x +10x
24 = 16x
X = 24/16
X = 3/2
Jika k=x, maka k+2 adalah :
3/2 + 2 = 3/2 + 4/2 = 7/2 = 3,5