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x in (-oo:+oo)
x-((2/3)*x)-1 = 2 // - 2
x-((2/3)*x)-2-1 = 0
x+(-2/3)*x-2-1 = 0
1/3*x-3 = 0 // + 3
1/3*x = 3 // : 1/3
x = 3/1/3
x = 9
x = 9
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