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2/7 = (6*x)/49 // - (6*x)/49
2/7-((6*x)/49) = 0
(-6/49)*x+2/7 = 0
2/7-6/49*x = 0 // - 2/7
-6/49*x = -2/7 // : -6/49
x = -2/7/(-6/49)
x = 7/3
x = 7/3
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