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(2/3)*(3*x+6) = 2*x+8 // - 2*x+8
(2/3)*(3*x+6)-(2*x)-8 = 0
(2/3)*(3*x+6)-2*x-8 = 0
2/3*(3*x+6)-2*x-8 = 0
2/3*(3*x+6)-2*x-8 = 0
4-8 = 0
-4 = 0
-4 = 0
x belongs to the empty set
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