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(1/3)*x+5/3 = 2*x+1 // - 2*x+1
(1/3)*x-(2*x)+5/3-1 = 0
(1/3)*x-2*x+5/3-1 = 0
2/3-5/3*x = 0 // - 2/3
-5/3*x = -2/3 // : -5/3
x = -2/3/(-5/3)
x = 2/5
x = 2/5
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