Solve a Equation Guide

I need solve a equation with values get form the guide

Normally I used the the command solve, but this command needs the variables into the line, I cant change....

Wherever i tried to do this way...

syms a b kc

x=0.1345*a+3.7;
y=2.31*kc-1.2;
z=3*b;
w=3*a-2.134;
t=3*kc-1.2;
u=2.145;
[a,b,kc]=solve(x==y,w==z,t==u)

but obviusly doesnt work

Answer 1

[Walter Roberson]

Try

[a,b,kc] = solve(x-y,w-z,t-u,a,b,kc)

Your question about GUIDE is not clear. You can get() strings from edit boxes and str2double() the strings.

Are you trying to put the equations themselves in the edit box? That is possible: sym() the string and pass that into solve()

eq1 = sym(get(handles.BOX1, 'String'));