matlab解方程式>> syms x>> s=solve('(3.4-3.2)/(3.2-2.3)=(0.85-x)/

matlab解方程式
>> syms x
>> s=solve('(3.4-3.2)/(3.2-2.3)=(0.85-x)/(x-0.65)');
>> x=s.x
用上述命令求解x,怎么提示如下内容：
Error using ==> subsref
No appropriate method,property,or field x for class sym.
Error in ==> sym.subsref at 17
y = builtin('subsref',x,a);