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