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x in (-oo:+oo)
2/3 = (5-(2*x))/9 // - (5-(2*x))/9
2/3-((5-(2*x))/9) = 0
2/3-((5-2*x)/9) = 0
(-1*(5-2*x))/9+2/3 = 0
(-1*3*(5-2*x))/(3*9)+(2*9)/(3*9) = 0
2*9-1*3*(5-2*x) = 0
6*x+3 = 0
(6*x+3)/(3*9) = 0
(6*x+3)/(3*9) = 0 // * 3*9
6*x+3 = 0
6*x+3 = 0 // - 3
6*x = -3 // : 6
x = -3/6
x = -1/2
x = -1/2
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