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D( x )
3*x = 0
x = 0
3*x = 0
3*x = 0
3*x = 0 // : 3
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2/(3*x)+1/2 = 4/x+4/3 // - 4/x+4/3
2/(3*x)-(4/x)+1/2-(4/3) = 0
2/(3*x)-4*x^-1+1/2-4/3 = 0
-10/3*x^-1 = 5/6 // : -10/3
x^-1 = -1/4
-1 < 0
1/(x^1) = -1/4 // * x^1
1 = -1/4*x^1 // : -1/4
-4 = x^1
x = -4
x = -4
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