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7*x+6/2 = 5*x-(2/3) // - 5*x-(2/3)
7*x-(5*x)+6/2+2/3 = 0
7*x-5*x+6/2+2/3 = 0
2*x+11/3 = 0 // - 11/3
2*x = -11/3 // : 2
x = -11/3/2
x = -11/6
x = -11/6
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