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