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(-2/3)*(x+2/3) = (-2/5)*(x+6) // - (-2/5)*(x+6)
(-2/3)*(x+2/3)-((-2/5)*(x+6)) = 0
(-2/3)*(x+2/3)+(2/5)*(x+6) = 0
2/5*(x+6)-2/3*(x+2/3) = 0
2/5*(x+6)-2/3*(x+2/3) = 0
88/45-4/15*x = 0
88/45-4/15*x = 0
88/45-4/15*x = 0 // - 88/45
-4/15*x = -88/45 // : -4/15
x = -88/45/(-4/15)
x = 22/3
x = 22/3
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