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((2*x)/5)*x-3 = (4/3)*x-1 // - (4/3)*x-1
((2*x)/5)*x-((4/3)*x)-3+1 = 0
((2*x)/5)*x+(-4/3)*x-3+1 = 0
2/5*x^2-4/3*x-2 = 0
DELTA = (-4/3)^2-(-2*2/5*4)
DELTA = 224/45
DELTA > 0
x = ((224/45)^(1/2)+4/3)/(2/5*2) or x = (4/3-(224/45)^(1/2))/(2/5*2)
x = 5/4*((224/45)^(1/2)+4/3) or x = 5/4*(4/3-(224/45)^(1/2))
x in { 5/4*(4/3-(224/45)^(1/2)), 5/4*((224/45)^(1/2)+4/3) }
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