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(2/3)*x+(4/3)*y = -4/3 // + -4/3
(2/3)*x+(4/3)*y-(-4/3) = 0
(2/3)*x+(4/3)*y+4/3 = 0
2/3*x+4/3*y+4/3 = 0 // - 4/3*y+4/3
2/3*x = -(4/3*y+4/3) // : 2/3
x = (-(4/3*y+4/3))/2/3
x = -3/2*(4/3*y+4/3)
x = -3/2*(4/3*y+4/3)
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