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x in (-oo:+oo)
3*x+4/9 = (2/3)*x-1/45 // - (2/3)*x-1/45
3*x-((2/3)*x)+4/9-(-1/45) = 0
3*x+(-2/3)*x+4/9+1/45 = 0
7/3*x+7/15 = 0 // - 7/15
7/3*x = -7/15 // : 7/3
x = -7/15/7/3
x = -1/5
x = -1/5
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