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