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2*(x+9)-x+5/3+7 = 0
(2*3*(x+9))/3+(3*(-x))/3+5/3+(3*7)/3 = 0
2*3*(x+9)+3*(-x)+3*7+5 = 0
3*x+5+21+54 = 0
3*x+21+59 = 0
3*x+80 = 0
(3*x+80)/3 = 0
(3*x+80)/3 = 0 // * 3
3*x+80 = 0
3*x+80 = 0 // - 80
3*x = -80 // : 3
x = -80/3
x = -80/3
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