Problems with symbolic representation

Hi everyone!

I'm currently working on a problem, but I'll simplify it so that everyone can know what I mean.

This is the file:

----------------------------------------------------------------------

close all
clear all
clc
syms x
a=5;
b=7;
c=a+b;
solve('x/2*a-7*b-13*c+14*a*b*x*c-34*x-7*b')

----------------------------------------------------------------------

Result:

ans =
(28*b + 26*c)/(a + 28*a*b*c - 68)

How can I get the value of "x" in a normal number, not symbolic expression?

Also

If I use:

eval('x/2*a-7*b-13*c+14*a*b*x*c-34*x-7*b')

I get this:

ans =
(11697*x)/2 - 254

All I need is to get the value of x....

Thanks in Advance!

Answer 1

[Oleg Komarov]

a = 5;
b = 7;
c = a+b;
syms x
out = solve(x/2*a-7*b-13*c+14*a*b*x*c-34*x-7*b,x)
double(out)

Note that I did not use the ' '.

[Vihar Chervenkov]

Thanks a lot!!!

Answer 2

[Walter Roberson]

double(solve(subs(sym('x/2*a-7*b-13*c+14*a*b*x*c-34*x-7*b'))))

or

double(solve(x/2*a-7*b-13*c+14*a*b*x*c-34*x-7*b))

[Vihar Chervenkov]

Cheers!