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(2/7)*x+2 = 4*x-(194/7) // - 4*x-(194/7)
(2/7)*x-(4*x)+194/7+2 = 0
(2/7)*x-4*x+194/7+2 = 0
208/7-26/7*x = 0 // - 208/7
-26/7*x = -208/7 // : -26/7
x = -208/7/(-26/7)
x = 8
x = 8
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