if AT=3x +8,OB =5x+4,and KN=6x+4,find x
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Answer:
OB = (AT+KN) / 2
5x + 4 = (3x + 8 + 6x + 4) / 2
3x + 8 + 6x + 4 = 10x + 8
10x - 3x - 6x = 4 + 8 - 8
x = 4