Solving an equation



 
I define

(%i1) X: Qs * MLSS * (1 + r) / A

(%i2) X = 8.85 * (100 / SSVI)^0.77 * (Qs * r / A)^0.68

(%i3) solve(%i2, A)

Expecting to get A = f(Qs, MLSS, SSVI, r)

Instead I get A on both RHS & LHS, and cannot find a suitable 'simplify'
command to get the equation fully explicit in A.

How do I persuade Maxima to give me a fully explicit solution?
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