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x in (-oo:+oo)
2*(x+3) = (1/2)*x-1 // - (1/2)*x-1
2*(x+3)-((1/2)*x)+1 = 0
2*(x+3)+(-1/2)*x+1 = 0
2*(x+3)-x/2+1 = 0
(2^2*(x+3))/2-x/2+(1*2)/2 = 0
2^2*(x+3)-x+1*2 = 0
3*x+2+12 = 0
3*x+14 = 0
(3*x+14)/2 = 0
(3*x+14)/2 = 0 // * 2
3*x+14 = 0
3*x+14 = 0 // - 14
3*x = -14 // : 3
x = -14/3
x = -14/3
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