In Smath and any CAS there is no push button "Solve", neither in Win.
Native Smath f(x) offers 3 solvers: roots, solve, FindRoots.
Two more are available: root [undocumented], Maple RootOf.
This Companion Treasury is a first brew, usable as is.

Jean ... Enjoy/comment

Solve TREASURY_00000 [Advection CREATE].sm (48 KiB) downloaded 70 time(s).
Solve TREASURY_000 [root, RootOf LECTURE].sm (114 KiB) downloaded 73 time(s).
Solve TREASURY_00 [Tridiagonal].sm (107 KiB) downloaded 49 time(s).
Solve TREASURY_1 [Iterate L, Lc].sm (267 KiB) downloaded 61 time(s).
Solve TREASURY_0 [General].sm (325 KiB) downloaded 57 time(s).
Solve TREASURY_0000 [Advection Anim].sm (1 MiB) downloaded 58 time(s).