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