Solution not eliminated const

[Former user]

Hi,

I run the next code: IExpr exp = util.evaluate("Solve((3.0y)/x==(1.5y)/z,x)");

And get the next result: {{x->(2.0y)/(y1/z)}}

I expected too get the next result instead: {{x->(2.0*z)}}

[Axel Kramer]

Fix #165

Transform Power(Times(a,b,c,Power(d,-1.0)....), -1.0) to Times(a^(-1.0),b^(-1.0),c^(-1.0),d,....)

→ <<cset 280bc8e4ca1d>>