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(2/3)*x-(7*x)+1 = 5*x-2+6 // - 5*x-2+6
(2/3)*x-(7*x)-(5*x)-6+1+2 = 0
(2/3)*x-7*x-5*x-6+1+2 = 0
-34/3*x-3 = 0 // + 3
-34/3*x = 3 // : -34/3
x = 3/(-34/3)
x = -9/34
x = -9/34
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