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-2/5 = (-1/2)*x-(5/3) // - (-1/2)*x-(5/3)
5/3-((-1/2)*x)-2/5 = 0
(1/2)*x-2/5+5/3 = 0
1/2*x+19/15 = 0 // - 19/15
1/2*x = -19/15 // : 1/2
x = -19/15/1/2
x = -38/15
x = -38/15
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