You can put this solution on YOUR website! JM + MK = JK.
JK - JM = MK
(3x/4) -6 - (x/8) = MK
(6x/8) -6 - (x/8) = MK
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Multiply all by 8
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6x - 48 - x = 8MK
5x - 48 = 8 MK
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Divide all by 8
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(5/8)x - 6 = MK
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Cleomenius.